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General Diseases Influence on Peri-Implantitis Development: a Systematic Review J Oral Maxillofac Res 2016;7(3):e5 doi:10.5037/jomr.2016.7305 |
General Diseases Influence on Peri-Implantitis Development: a Systematic Review
1Department of Oral and Dental Pathology, Lithuanian University of Health Sciences, Kaunas, Lithuania.
2Department of Maxillofacial Surgery, Lithuanian University of Health Sciences, Kaunas, Lithuania.
Corresponding Author:
Laisves al. 92a-2, LT- 44251, Kaunas
Lithuania
Phone: 0037061385620
E-mail: zygimantasg@yahoo.com
ABSTRACT
Objectives: To systematically review the influence of systemic diseases or medications used in their treatment on the dental implant therapy success.
Material and Methods: The search strategy was implemented on the National Library of Medicine database (MEDLINE) (Ovid) and EMBASE electronic databases between January 2006 and January 2016. Human studies with available English articles analysing the relationship between dental implant therapy success and systemic diseases, such as diabetes mellitus, AIDS/HIV, rheumatoid arthritis, osteoporosis, Crohn’s disease, cardiovascular diseases, scleroderma, Sjögren’s syndrome, lichen planus, ectodermal dysplasia, post-transplantation status, were included in present review according to the PRISMA guidelines. The review protocol was registered on PROSPERO system with the code CRD42016033662.
Results: Present review included forty one retrospective and prospective follow-up studies, case-control studies, case report series and cohort studies. Despite some limitations this study reveals positive results of implantation in most systemic conditions that should be interpreted with caution. Influence of cardiovascular diseases on the dental implantation success should be explored deeply, because of controversial results and likelihood of comorbidity expressed by a history of cardiovascular diseases and periodontitis. There is only a weak relationship with bone density in osteoporosis and implant failure. All the other diseases did not show significant effect on implantation success.
Conclusions: Recent studies with low strength of evidence and controversy show that systemic diseases may have potential effect on the success of implantation, but further detailed studies are needed to provide these findings.
J Oral Maxillofac Res 2016;7(3):e5
doi: 10.5037/jomr.2016.7305
Accepted for publication: 22 August 2016
Keywords: dental implants; diabetes mellitus; osteoporosis; peri-implantitis; rheumatoid arthritis.
INTRODUCTION
The replacement of missing teeth with endosseous implants for the rehabilitation of edentulous or partially edentulous patients has become a standard of care in the past two decades. To achieve and maintain osseointegration, indications and contraindications must be carefully balanced, and proper patient selection is a key issue in treatment planning [1].
Osseointegrated dental implants have a long-term success rate of over 90%, but may be threatened by peri-implant mucositis and peri-implantitis, bacteria biofilm-induced inflammatory conditions. A number of risk indicators were identified including poor oral hygiene, a history of periodontitis, diabetes and smoking [2-4]. Peri-implant diseases share similar aetiology and risk factors as chronic periodontitis [5]. Both of them are initiated by the accumulation of microbial biofilms on hard surfaces that is teeth or dental implants. Systemic diseases may impair the host’s barrier function and immune defence against periodontal pathogens creating the opportunity for destructive periodontal disease and likely peri-implantitis [6,7].
Systemic diseases and medications or other therapies used in their treatment may also interfere healing by influencing the host tissues and physiology, thus increasing the risk of early and late failures of implants [8,9].
Buser et al. [10] proposed to subdivide risky diseases for implant therapy success into two groups with high risk for patients with serious systemic diseases (rheumatoid arthritis, osteomalacia, osteogenesis imperfecta, immunocompromising diseases) or alcoholism, and significant risk for patients with irradiated bone, severe diabetes mellitus, bleeding disorders or heavy smoking habits.
Although clinically relevant impact of the most common systemic diseases on the success of implant therapy has been suggested, however there is limited information on the association between implant success and systemic diseases and what type of evidence these statements are based [9].
The aim of present systematic review was to assess the influence of systemic diseases or medications used for the treatment of systemic disease, on the dental implant therapy success.
MATERIAL AND METHODS
Protocol and registration
The methods of the analysis, inclusion and exclusion criteria were specified in advance and documented in a protocol. The review was registered in PROSPERO, an international prospective register of systematic reviews.
The protocol can be accessed at:
http://www.crd.york.ac.uk/PROSPERO/display_record.asp?ID=CRD42016033662.
Registration number: CRD42016033662.
The reporting of this systematic analysis adhered to the PRISMA (Preferred Reporting Item for Systematic Review and Meta-Analyses) Statement [11].
Focus question
The following review question was developed according to the population, intervention, comparison, and outcome (PICO) study design: What is the risk level for implant failure or peri-implantitis in patients undergoing implant treatment with a history of scleroderma, Sjögren’s syndrome, neuropsychiatric disorders/Parkinson‘s disease, oral lichen planus, HIV infection, ectodermal dysplasia, long-term immunosuppression after organ transplantation, cardiovascular disease, Crohn disease, diabetes, osteoporosis, medication with oral bisphosphonates, or xerostomia?
Information sources
The search strategy was based on electronic database examination. A search was implemented on the National Library of Medicine database (MEDLINE) (Ovid) and EMBASE databases based on the search strategy described further.
The search strategy included 3 stages. In the first stage, a title screening took place to exclude all irrelevant publications, case reports, reviews, and animal studies. In the second stage, the abstracts were read to see if the aim of the study met the systematic review questions. The third stage was reading full-text articles to confirm each study’s eligibility, according to the inclusion and exclusion criteria. The search was conducted including studies between January 2006 and January 2016 to ensure sufficient and large enough amount of included studies.
Search
The following search strategy using keywords: “oral implant” OR “dental implant” OR “peri-implantitis” AND “osteoporosis” OR “osteoporotic” OR “oral bisphosphonates” OR “bisphosphonates” OR “diabetes mellitus” OR “insulin therapy” OR “glucose intolerance” OR “rheumatoid arthritis” OR “AIDS” or “HIV” OR “scleroderma” OR “Sjögren’s syndrome” OR “Lichen planus” OR “neuropsychiatric disorders” OR “Parkinson” OR “ectodermal dysplasia” OR “Crohn‘s disease” OR “transplantation” OR “cardiovascular” OR “xerostomia”
This search for papers was intended for high initial numbers rather than highly specific and strictly rejected in the first instance. The variable terming of condition in interest was chose to broaden the search field.
Selection of studies
Three independent reviewers screened titles and abstracts of the search results. Additional studies were screened by scanning the references cited in the retained papers and by personal communication. Any disagreement regarding inclusion was resolved by two against one. The agreement between reviewers was calculated using kappa (κ) index [12]. On the title and abstracts screening independent researchers carried out the search on various diseases. Only accepted abstracts were then discussed through all three authors. At the full-text reading stage all the researchers were included in evaluation of every study.
Types of publications
The review included all human studies and case reports series published in English. Reviews, letters, editorials and PhD thesis were excluded.
Types of studies
Present review included all retrospective and prospective follow-up studies, case-control studies, case report series and cohort studies published between January 2006 and January 2016, evaluating the relationship between implant treatment success and at least one systemic disease.
Types of participants/population
The subjects in the included studies should have been implantation patients who were diagnosed with any systemic disease that may affect implant treatment outcomes.
Disease definition
Authors of present review selected possibly relevant diseases that may affect the success of implantation. It was decided that successful implantation should be, when implants were stable and osseointegrated without any signs of critical complications.
Inclusion and exclusion criteria
All the included studies should have followed the inclusion criteria listed below:
Human subjects with the respective diagnosis;
Subjects with osseointegrated dental implants or implant placement;
Reports of implant failure, survival, and/or success or peri-implantitis;
Case series including at least ten subjects with the respective diagnosis. If case reports with fewer treated subjects were the only available source of information, they were listed;
Articles available in English.
Following exclusion criteria were applied to all review studies:
Subjects not uniformed with the diagnosis;
Uniformed implantation procedure, whether bone augmentation, sinus lift or other additional procedures are included, or implants solely;
Smokers, bad oral hygiene, immediate loading, immediate placement.
Sequential search strategy
On the first stage of research, same filters were added to every independent disease search: human studies, articles available, 10 years. On the initial search any case reports, reviews and other irrelevant studies were excluded. Following the abstract reading stage, inclusion and exclusion criteria were applied to the information given in abstracts, is any information was missing the full-text reading was performed. At the final stage, all the included articles were carefully screened and only relevant articles were included for further analysis.
Data items
All included studies were arranged according to following fields:
“Author/year“ - to show the author and year of publication.
“Implantation type“ - described weather the immediate implantation post-extraction, sinus lift, bone augmentation etc. were applied to included patients.
“Number of subjects“ - evaluated the number of subjects included in studies.
“Number of implants“ - showed the amount of implants analysed in studies.
“Year of follow-up“ - described the mean, minimum and maximum follow-up time periods applied to subjects.
“Disease severity or medication dose level“ - was used to evaluate the disease’s severity or medication dose level and type of consumption to reveal if these factors affect the success of implantation.
“Disease manifestations according to the implantation“ - showed, weather the time (post and pre-operative) of disease manifestation affected the implantation success.
Risk of bias assessment
The quality of all included studies was evaluating during the full text reading stage. To assess the risk of bias in every study the Cochrane Collaboration’s two-part tool was used [13]. Studies were assessed independently by authors. If any uncertainties were found in studies, the decision was made through the discussion between all the authors.
All the articles were individually evaluated to assess the risk of bias in random sequence generation, allocation concealment, blinding of participants and practitioners, blinding of outcomes assessment, incomplete outcomes data, selective reporting and other sources of bias. All the categories were rated as “low risk of bias”, if any uncertainties were found, “high risk of bias” if study showed bias in selected category and “unclear risk of bias” if the methodology was not clearly stated and the risk remained questionable. A study itself was mentioned as “low risk of bias”, if all the categories were rated for “low risk of bias”. If at least one category was rated as “high risk of bias” or “unclear risk of bias”, the study itself is rated as “high risk of bias” or “unclear risk of bias” respectively.
All the retrospective studies were rated with appreciation that not all the factors, that may affect the bias, could have been controlled by authors, since information of previously performed procedures was collected.
Statistical analysis
A meta-analysis integrates the quantitative findings from separate but similar studies, and it allows evaluation of the numerical results of the overall effect of interest. All meta-analysis were performed on studies reporting comparable outcomes. However, most studies could not be compared due to methodological heterogeneity and presented results dispersion. The data was analysed with a Student t-test, 95% confidence interval (CI) was calculated where possible. To evaluate the degree of agreement between authors, κ index was used [12].
RESULTS
Study selection
Study selection process was graphically designed according to PRISMA flow diagram. (Figure 1) The initial search identified a total of 1410. One additional article was added, resulting in 1401 studies in primary search stage. The screening of article titles and independent screening of abstracts resulted in 721 possibly included articles. The inclusion and exclusion criteria were applied to 82 full-text articles. A total of 41 articles that met the inclusion criteria were selected for systematic review [14-54].
Figure 1 |
The κ values for inter-reviewer agreement for potentially relevant articles were 1 (titles and abstracts) and > 0.9 (full-text articles), indicating an “almost perfect agreement” between the 2 reviewers [12].
Study exclusion
At the full text reading stage, in total 41 articles were excluded. The reasons of exclusion were as follows: review papers (n = 8), single case reports (n = 18), methodological and design faults (n = 15). Mostly exclusion should be provided due to the inadequate articles filtering at the first study selection stage.
Study characteristics
In total 16 prospective studies [14,18,19,28,35-40,44,45,47,48,50,53] from which 5 were controlled clinical trials [38-40,44,48] and 1 cross-sectional study [45], 23 retrospective studies [15-17,20,23-27,29-34,41-43,46,49,51,52,54] and two case series studies [21,22] were included in present research.
In total 6813 patients and 19332 implants were screened in included studies. However, in few articles number of implants was not listed [18,27,47,51-53]. The follow-up mean period varied from 9 weeks up to 10 years. However, in few studies follow-up period was not listed due to methodological differences [23,24,26,29,30,32].
The implantation success ratio ranged between 100% and 73% on patients and between 100% and 82.6% on implants. However, these results should be interpreted carefully, since very wide follow-up period gap was seen in included studies.
All studies were classified according to the disease as a risk factor to implant treatment type. 19 articles evaluated osteoporosis and/or bisphosphonate (BP) therapy effect [14-32], in six studies diabetes mellitus was analysed [33-38]. Five articles were based on cardiovascular influence evaluation [47,51-54], three authors reported the relation between implantation success and rheumatoid arthritis [41-43]. In two studies the effect of HIV was analysed [39,40]. One by one articles were included in evaluating the effect of following diseases and stages: Crohn‘s disease [47], Sjögren’s syndrome [49], ectodermal dysplasia [50] and immunosuppression after transplantation [48].
Risk of bias within the studies
In total 13 studies were considered as “low risk of bias“, since all the categories in Cochrane Collaboration’s two-part tool were carried out with low possibility of bias [13]. Eleven reports were rated as “unclear risk of bias”. 17 articles were decided to be “high risk of bias” due to methodological uncertainties. Most discrepancies were found in study sample selection and allocation processes (Table 1).
Table 1 |
Risk of bias across the studies
Some of the limitations may be found in this review that may influence the outcomes. In present review only studies published in English were evaluated. Also, studies with small sample sizes were excluded, same as case reports. Also, high heterogeneity across the studies was seen. While most of the studies were retrospective, evaluating the broad period results, even prospective studies showed great methodological differences. Some studies measured the implantation results in patients with systemic diseases with results, provided from healthy participants, while other studies presented only systemic disease affected patients or those with complications. While some rare but severe complications were measured across the studies (e.g. Bisphosphonate related osteonecrosis of the jaws [BRONJ]) we have missed concrete risk rating in most of the studies. Also, in many studies various implantation manipulations were included with summed up results.
Effect of various diseases on implantation outcomes
Osteoporosis and bisphosphonates treatment
Out of 4 studies, evaluating only osteoporosis as a risk factor to implantation success, none of them showed significant differences (Table 2) [14-17].
Table 2 |
Kuchler et al. [14] study noted that the sample size was not enough to find any statistically significant differences to evaluate the effect of Teriparatide. Three other studies [15-17] did not find any significant differences for implantation success neither for osseointegration quality between osteoporotic and control groups. Holahan et al. [16] found that osteoporosis did not show any correlation to local jaw bone quality, but when it was, set subjectively by surgeon, it highly correlated with implantation success (P < 0.01). It should be noted that Mozzati et al. [15] combined many different implantation methods, such as immediate function loading, immediate implantation and sinus lifting. Sinus lift was mentioned as relevant implant failure risk factor. Also, patients with various risk factors, including diabetes mellitus, smoking, corticosteroid users, oral BP users, were combined in this study [15].
Totally different from all others in methodology, was Shibli et al. [17] study, in which histological evaluation was held. There were no statistically significant differences found between osteoporotic and control patients groups, according to the bone to implant contact (46 [SD 11.46]% vs. 47.84 [SD 14.03]% respectively) [17]. However, Alsaadi et al. [32] reported significant correlation between the osteoporosis and implant failure (P = 0.001).
BRONJ as a severe complication, which could be provoked because of the implantation, was examined in various studies (Table 3) [15,18,19,22,26,27,31]. Two main methodological groups could be concluded - studies [15,19,26,31], evaluating the BRONJ among implantation patients, and studies [18,20,22,27], evaluating the effect of implantation between BRONJ patients, presenting different outcomes.
Table 3 |
Results from studies evaluating the percentage of BRONJ between osteoporotic, BP using implantation patients did not show any significant correlations [15,19,26,31].
Authors that evaluated the implantation influence in BP users among the patients with BRONJ showed conflicting results. Four authors [18,20,22,23] stated that implantation may induce the start of BRONJ in BP patients. However, Lazarovici et al. [27] stated, that surgical procedure is not a trigger for the BRONJ onset, since most BRONJ are late complications after implantation. All authors [18,20,22,23,27] stated that BRONJ could be present even if the BP treatment is started after the full implants osseointegration and usually comes as late complication, which onsets after 20.9 months [20] to 35 months [18].
BP effect to the implantation success did not show any statistically significant differences in various studies [21,24,25,30,31]. However, Zahid et al. [25] showed high correlation between the BP usage and implant thread exposure (P = 0.001) among the 51 implants. Martin et al. [29] and Alsaadi et al. [32] found, that oral BP may cause various peri-implant complications (P = 0.001) [32].
Griffiths et al. [28] pilot study showed the effect of Aledronate to bone mineral density. Despite the small sample size (n = 10), placebo-drug trial revealed that Aledronate interferes bone remodelling in drug using period. Decreasing bone mineral density was present in results, during the alendronate intake, but 6 months after the end of drugs usage the bone mineral density rebounded. Nevertheless this was only a pilot study [28]; the BP effect to the bone – stronger or weaker - is clearly present.
Diabetes mellitus
Half of the authors [33,34,36] did not find any significant correlations between the presence of diabetes mellitus and implantation success (Table 4). On the contrary, Dowell et al. [36] did not find any evidence of lower implantation success in poorly controlled patients. In one study [38] exclusively only poorly controlled diabetes mellitus patients were included a despite some complications (soft tissues inflammation, implant rotation, pain during the healing abutment application) were observed, at all 98% successes was reached.
Table 4 |
Oates et al. [35] found that osseointegration during the first 4 months postoperatively was poor in people with higher HbA1c levels. Only 57.1% implants of poorly controlled diabetes mellitus returned to exceeded baseline stability level after 16 week, compared with 80% in well-controlled group [35]. The similar outcomes were reached in Tawil et al. [37] study, where statistically significant correlations between HbA1c levels and peri-implantitis (P = 0.05) or peri-implant bone loss (P = 0.01) were observed.
The higher risk of implantation in diabetes mellitus patients was mentioned in all the studies, despite the positive outcomes [33-38].
HIV and AIDS
Two studies [39,40] were identified as representatives for implant therapy for HIV patients. Evidence level is limited due to low number of patients and short observation period. However, there were no differences in implant success among the groups with HIV- or HIV+ [39,40].
Rheumatoid arthritis
Three studies were enrolled to show the influence of rheumatoid arthritis on implant treatment success [41-43]. The success rates range between 93.8% [41] and 96,1% [42]. None of the authors found significant correlations between the rheumatoid arthritis and implantation success [41-43]. However, one author [41] stated that the crestal bone resorption and bleeding on probing was higher in patients with rheumatoid arthritis.
Oral lichen planus
Three studies with the different study type and follow-up periods were analysed to evaluate influence of oral lichen planus (OLP) on the of peri-implant complications [44-46]. Authors of all studies concluded that success of implant rehabilitation among treated OLP patients does not differ from the success rate in the general population. Implant survival and success rate was 100% vs. 96.8% in the control group [44]. Two studies confirmed that implant placement didn’t influence OLP manifestation [45,46].
Crohn’s disease
Only one prospective study included in the review shows statistically significant
Crohn’s disease’s effect on early implant failures [47]. However evidence level is limited as this study included 11 patients with the 6 months follow-up.
Immunosuppression after organ transplantation
One prospective controlled study was included that shows effect of immunosuppressive therapy on the patient’s that undergo organ transplantation [48]. Despite small sample size of 10 patients and 20 implants with the follow-up three months, Montebugnoli et al. [48] concluded that the bone response around submerged dental implants in immunocompromised organ transplant patients does not differ from that observed in control patients and no rejection of implants was noticed. There is no data on the success of implants in the long term.
Sjögren‘s syndrome
One retrospective study was identified that shows success of implantation in 50 patient‘s group with Sjögren’s syndrome [49]. Early complications rate was 3% of 140 implants. Although patients showed more signs of peri-implant mucositis, Korfage et al. [49] stated this clinically irrelevant, and after median follow-up of 3.8 years prevalence of peri-implantitis was 11% which is comparable with healthy patients. There is some caution with regard to the potentially increased risk on peri-implantitis in the long term [49].
Ectodermal dysplasia
Only one study included involving patients with ectodermal dysplasia [50]. The short-term survival data supports successful placing of dental implants in patients with ectodermal dysplasia and congenitally missing teeth with appropriate precautions in the maxilla. Although the age of these patients ranged from 8 to 68 years, there was no significant difference in survival of implants among patient age groups. The difference in the survival rates of implants placed in anterior mandible (9%) and maxilla (23%) approached significance [50].
Cardiovascular diseases
All five studies included to assess impact of cardiovascular diseases (CVD) on implantation outcomes are dealing with several correlative factors (other systemic diseases, smoking, periodontitis) and CVD are among them [47,51-54].
Alsaadi et al. [51] in short term study concluded that tendency for early failures wasn‘t noticed for CVD or hypertension.
de Souza et al. [52] investigated 189 patients with CVD and hypertension out of 253 individuals that had previously attended the supportive periodontal program, to assess the impact of local and systemic factors on additional bone loss (ABL > 2 mm according to the X-ray). Analysis included former chronic periodontitis diagnosis; smoking and local factors and confirmed that CVD are not associated with additional bone loss [51]. Alsaadi et al. [47] in retrospective study found that late implant loss was not correlating with CVD and hypertension.
On the contrary, results of two studies out of five state that patients with CVD showed increased peri-implant bone loss [53] and periimplantitis is associated with CVD [54].
Krennmair et al. [53] revealed that patients with CVD (n = 19) show significantly increased peri-implant marginal bone loss for 4 implant supported mandibular full arch restorations. However study investigated small sample of cardiac patients including smokers and assessed marginal bone loss only, there is no data published on the success rate of implants [53].
A history of CVD was found in 27.3% if individuals with peri-implantitis and in 3% of individuals in the implant health/peri-implant mucositis group [54]. The present study assessed data on radiographic bone levels and concluded that peri-implantitis is a high likelihood of comorbidity expressed by a history of CVD and periodontitis [54].
DISCUSSION
In present review we have established only few systemic diseases that were approved by several authors to significantly affect implant treatment success.
Most studies were based on evaluating the relationship between the osteoporosis and its treatment influence on implantation success. Osteoporosis is a systemic bone disorder, which is related with the loss of internal structure loss in bone’s architecture, lower bone mass and micro and macro bone changes [55,56]. There are several different osteoporosis aetiology theories, asserting the lack of oestrogen, calcium circulation disorders, thyroid dysfunction as main causing factor [55,57,58]. Due to the demonstrated effect of oestrogen insufficiency, in many studies only post-menopausal females were included [15,16,19,24,26]. However, in none of the studies laboratorial hormonal examinations were performed, only stating that post-menopausal women are in higher risk for osteoporosis without individual examinations. Despite the pathogenic osteoporosis effect to the bone, Holahan et al. [16] did not find any significant relationships between the osteoporosis and local bone mineral density in jaws. Most authors stated that there aren‘t any statistically significant correlations between the osteoporosis and implantation success [14-17]. However, it should be mentioned, that BP, the mostly used in osteoporosis treatment, may show some different results. The main working mechanism is based on suppression of both: bone remodelling and osteoclastic activity, and support of stable structure [59]. However, rare, but severe side effects are known due to use of BP, such as osteonecrosis of jaws, which usually arise in cancer patients with high BP doses undergoing invasive dental procedures [55,59]. Also, bone healing is usually prolonged in BP treated patients because of bone remodelling suppression [55]. While in present review half of the authors stated, that the connection between BRONJ and implantation is not statistically significant [15,19,26,31], the other half of the articles [18,20,22,23,27] showed that BRONJ may appear not only as implantation triggered procedure, but even after the full implants osseointegration, when treatment with BP starts. These differences, in present authors’ opinion, appeared due to the methodological and included subjects differences. While the BRONJ among all implantation patients, undertaking BP, is rare, from those with BRONJ, the implantation as possible causative factor is more likely to be. In five studies any negative BP effect to implantation was declined [21,24,25,30,31], but two authors stated, that the risk of peri-implant lesions is higher in patients undertaking BP [29,32]. Even if aledronates and risedronates are the first line medicine used in osteoporosis treatment [59], aledronate was found to be the most correlated BP with implant failures [22].
Most authors did not find the negative diabetes mellitus effect to the implantation outcomes [33,34,36], even in poorly controlled diabetes mellitus patients [38]. The main measurement tool used was HbA1c plasma levels. However, World Health Organization states that HbA1c monitoring is not a suitable test to measure intermediate hyperglycaemia [60]. HbA1c shows mean plasma glucose levels of past several weeks, so this method should be used to assess the control of present diabetes mellitus, not the disease itself [56,61]. Nevertheless, Tawil et al. [37] found statistically significant relationship between the plasma HbA1c levels and peri-implant lesions. Also, prolonged healing was found in non-well-controlled diabetes mellitus patients [35]. This is not surprising, since generally wound healing is prolonged in diabetes mellitus patients due to the lack of growth factors, impaired macrophage function, collagen accumulation, keratinocytes and fibroblasts migration processes [62]. Also, angiogenesis is poor in diabetes mellitus patients, which could be critical factor in voluminous surgical procedures [62].
Rheumatoid arthritis is complex systemic disease and the main mechanism is associated with autoimmune reactions that cause a destruction of articulatory systems. [63,64] Multiple cytokines play important role in promoting synovial inflammations, that later proceed to destructive process. [63-65] Bone destruction process is caused because of high osteoclastic activity, induced by inflammatory mediators and macrophages that are present in rheumatoid arthritis synovitis [63] However, despite these mechanisms, none of the authors found correlations with implantation treatment failures [41-43]. Even if implantations were successful in all studies, Krennmair et al. [41] stated that crestal bone resorption and bleeding after the probing was higher in rheumatoid arthritis patients. This might be due to the low disease expression to the implantation sites, or due to the methodological causes. To resolve this question, further studies are needed, since pathogenesis shows possible severe effect.
OLP is one of the most common chronic inflammatory autoimmune diseases that involve the oral mucosa with an incidence of 1 - 2% in various populations [66]. Several studies selectively exclude implantation in subjects with OLP [67,68]. Possible risks of dental implant placement in erosive OLP were suggested by Lekholm [69] who hypothesised an increased risk of failure due to the altered capability of the epithelium to adhere to the implant surface.
However according to this review success of implant rehabilitation among treated OLP patients does not differ from the success rate in the general population [44-46] and implant placement didn‘t influence OLP manifestation [45,46].
This opinion is confirmed by other systematic reviews [70,71]. In a case of OLP implants should be positioned only if mucosal signs and symptoms are in the remission phase. A careful oral hygiene and frequent follow-up are the main recommendations in OLP patients rehabilitated with implants [69,71]. With caution due to the level of scientific evidence of the analysed studies, OLP does not influence the success of dental implant therapy.
Evidence for implantation outcomes in patients with Crohn‘s disease, Sjögren‘s syndrome, ectodermal dysplasia and immunosuppressive state after transplantation due to the single publications, small sample sizes, short term follow-up is very low.
Crohn‘s disease as an autoimmune disease, affects host response, gastro-intestinal system and leads to periodontal lesions, osseointegration failures [72]. According to Alsaadi et al. [47] Crohn‘s disease may negatively influence osseointegration success, still further studies are needed to provide these findings.
Immunosuppressive treatment that follows organ transplantation may have negative effect on the bone mineral metabolism [73]. However single study of Montebugnoli et al. [48] indicated absence of early complications and showed that the bone response around submerged dental implants in immunocompromised organ transplant patients does not differ from that observed in control patients. The same was found with human immunodeficiency virus evaluation, since both studies evaluating HIV effect on implantation success did not show any evidence of negative effect to the procedure outcomes [39,40]
Outcome of dental implants in patients with Sjögren‘s syndrome and ectodermal dysplasia seem comparable to those of healthy patients [49,50], but further clinical investigations including control groups with healthy patients with longer follow-up are needed to clear provided information.
CVD may compromise blood flow and reduce oxygen and nutrient supply to tissues. This may have influence the outcome of osseointegration and induce crestal bone level changes over the time [53].
Implantation success data for cardiovascular patients are controversial and should be evaluated with caution. Results of two studies out of five [47,51-54] state that patients with CVD showed increased peri-implant bone loss [53] and periimplantitis is associated with CVD [54].
All the studies are dealing with several factors, among these is cardiovascular. Regression analysis might be an answer in a population with multiple diseases, study by Alsaadi et al. [51] states that systemic health factors do not seem to be prominent players in the aetiology of late implant loss. However, Mombelli and Cionca [8] in the review study, considered the fact that potential risk factors, particularly those found more frequently in older adults in general – systemic chronic diseases, smoking, periodontitis history, medications, reduced salivary flow – may not be independent of each other. One single factor alone may not influence the risk measurably, while a combination of multiple, independent factors may have a significant impact [8].
Other limitations of these studies which might explain their controversy, are heterogeneous data structure, some of them are unavailable as cardiovascular patients consisted only part of whole sample; no data published on the success rate of implants [47,53]; implants with different surfaces included [54]. Radiographic examination of additional bone loss has limitation due to the fact that it is performed only in two dimensions, which is not possible to examine buccal and oral sites [52].
Influence of systemic health problems to peri-implantitis requires additional epidemiologic and clinical investigations. For higher state of evidence randomized controlled clinical trials with included at least 10 patients per condition, more than 1 year of follow-up after implant loading, and the homogeneous criteria (probing pocket depth, bleeding on probing and/or pus, marginal bone loss) to define peri-implantitis.
Limitations
In present review we have faced some limitations, due to the high risk of bias assessed in various articles. Most included studies were retrospective, which could not give the full information about the implantation procedure implementation and possible risk of bias, reached before the evaluation process. Also, because those only English articles were included, some data could be missing.
CONCLUSIONS
- Osteoporosis is not an absolute contraindication to implantation.
- Implantation in bisphosphonate users may result in rare but severe osteonecrosis complication, regardless of the time of bisphosphonate treatment start - prior or post implantation.
- Diabetes mellitus is still controversially assessed in different studies; however it is clearly characterized as a factor encumbering implantation post-operative healing process.
- Oral lichen planus and rheumatoid arthritis was rated only in few studies, nevertheless no effect of these diseases to implantation success was found.
- Evidence level of implantation success in HIV/AIDS is limited due to few studies with short follow-up and small sample sizes, in which no effect to implantation was found.
- Influence of cardiovascular diseases on dental implantation success should be explored deeply, since controversial results were assessed. For higher state of evidence detailed randomized controlled clinical trials with homogeneous criteria are needed.
- To clarify the effect of Crohn’s disease to implantation success, more studies are needed, since only one prospective study with unclear risk of bias and small sample size was found with no evidence of Crohn’s disease negative influence on implantation outcomes.
- Sjögren’s syndrome, immunosuppressive state after transplantation and ectodermal dysplasia are rather non-related with implantation therapy success, but due to the single publications, small sample sizes, short term follow-up and possible risk of bias these evidences for implantation outcomes are very low.
- Clear and homogenous methodology is needed since heterogeneous studies outcomes comparison is complicated and not highly reliable.
- In studies, including patients with multiple diseases, possible co-effect of various diseases should also be reflected before excluding single disorders.
- There were no studies evaluating xerostomia and neuropsychiatric disorders, such as Parkinson’s disease, impact on implantation success that met present review inclusion criteria.
ACKNOWLEDGMENTS AND DISCLOSURE STATEMENTS
Authors would like to give acknowledgments to all the people that help in assessing the articles in interest, without any authorship.
No funding was needed to proceed with present review.
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To cite this article: General Diseases Influence on Peri-Implantitis Development: a Systematic Review J Oral Maxillofac Res 2016;7(3):e5 URL: http://www.ejomr.org/JOMR/archives/2016/3/e5/v7n3e5ht.htm |
Received: 25 July 2016 | Accepted: 22 August 2016 | Published: 9 September 2016
Copyright: © The Author(s). Published by JOMR under CC BY-NC-ND 3.0 licence, 2016.