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1.
Stomatologiia (Mosk) ; 103(3): 50-55, 2024.
Article Ru | MEDLINE | ID: mdl-38904560

The aim the study. Analyze errors in planning orthopedic treatment using dental implants using the example of clinical cases. MATERIALS AND METHODS: Two patients are presented who applied for a consultation at the orthopedic and surgical department of the Federal State Budgetary Institution National Medical Research Center Central Research Institute of Chronic and Peripheral Surgery of the Russian Ministry of Health regarding a fracture of a previously installed orthopedic structure on an implant. For diagnostic purposes, computed tomography was performed to determine the condition of the implants and teeth of the upper and lower jaws. RESULTS: The patients were found to have: a fracture of an implant 4.0*10 with a single orthopedic structure in the area of tooth 4.6 (the patient did not undergo restoration of the missing tooth 4.7 in the presence of an antagonist), a fracture of small diameter implants (3.5*9) in the area of 3.6, 3.7, prosthetic combined orthopedic crowns. CONCLUSIONS: During surgical and orthopedic treatment of patients, it is necessary to strictly follow the instructions developed by the manufacturer of dental implants and the STaR recommendations.


Dental Implants , Humans , Dental Implants/adverse effects , Male , Middle Aged , Female , Dental Restoration Failure , Tomography, X-Ray Computed , Dental Implantation/adverse effects , Adult , Crowns/adverse effects
2.
Int J Implant Dent ; 10(1): 32, 2024 Jun 14.
Article En | MEDLINE | ID: mdl-38874661

PURPOSE: This study aimed to evaluate the potential of Endothelin-1 (ET-1), a peptide derived from vascular endothelial cells, as a biomarker for diagnosing peri-implant diseases. METHODS: A cohort of 29 patients with a total of 76 implants was included in this study and subsequently divided into three groups based on peri-implant clinical parameters and radiographic examination: healthy (peri-implant health) (n = 29), mucositis (n = 22), and peri-implantitis (n = 25) groups. The levels of ET-1 (ρg/site) and interleukin (IL)-1ß (ρg/site) in peri-implant sulcus fluid (PISF) samples were determined using enzyme immunoassay. Statistical analyses were conducted using Kruskal-Wallis and Steel-Dwass tests. Logistic regression and receiver operating characteristic (ROC) curve analyses were performed to evaluate the diagnostic performance of the biomarkers. RESULTS: ET-1 levels were significantly elevated in the peri-implantitis group compared to those in the healthy group, and were highest in the peri-implant mucositis group. Additionally, IL-1ß levels were significantly higher in the peri-implantitis group than those in the healthy group. ROC curve analysis indicated that ET-1 exhibited superior area under the curve values, sensitivity, and specificity compared to those of IL-1ß. CONCLUSIONS: Our findings suggest that the presence of ET-1 in PISF plays a role in peri-implant diseases. Its significantly increased expression in peri-implant mucositis indicates its potential for enabling earlier and more accurate assessments of peri-implant inflammation when combined with conventional examination methods.


Biomarkers , Endothelin-1 , Interleukin-1beta , Peri-Implantitis , Humans , Endothelin-1/metabolism , Endothelin-1/analysis , Peri-Implantitis/diagnosis , Peri-Implantitis/metabolism , Cross-Sectional Studies , Male , Female , Biomarkers/metabolism , Biomarkers/analysis , Middle Aged , Interleukin-1beta/metabolism , Interleukin-1beta/analysis , Dental Implants/adverse effects , Adult , Mucositis/diagnosis , Mucositis/metabolism , Gingival Crevicular Fluid/chemistry , Gingival Crevicular Fluid/metabolism , Aged , ROC Curve
3.
J Vis Exp ; (207)2024 May 17.
Article En | MEDLINE | ID: mdl-38829116

Dental implants have a high success and survival rate. However, complications such as peri-implantitis (PI) are highly challenging to treat. PI is characterized by inflammation in the tissues around dental implants with progressive loss of supporting bone. To optimize dental implants' longevity in terms of health and functionality, it is crucial to understand the peri-implantitis pathophysiology. In this regard, using mouse models in research has proven clear benefits in recreating clinical circumstances. This study aimed to describe an experimental model of ligature-induced peri-implantitis in mice and determine whether there is effectiveness in inducing this disease, given the observed bone and tissue changes. The experimental peri-implantitis induction comprehends the following steps: teeth extraction, implant placement, and ligature-inducted PI. A sample of eighteen 3-week-old C57BL/6J male mice was divided into two groups, ligature (N=9) and control non-ligature (N=9). The evaluation of clinical, radiographical, and histological factors was performed. The ligature group showed significantly higher bone loss, increased soft tissue edema, and apical epithelial migration than the non-ligature group. It was concluded that this pre-clinical model can successfully induce peri-implantitis in mice.


Disease Models, Animal , Mice, Inbred C57BL , Peri-Implantitis , Animals , Mice , Peri-Implantitis/etiology , Peri-Implantitis/pathology , Male , Ligation/methods , Dental Implants/adverse effects
4.
Swiss Dent J ; 134(3)2024 06 07.
Article De | MEDLINE | ID: mdl-38847057

Mit der Verbreitung von Zahnimplantaten ist die Zahl neurologischer Komplikationen gestiegen, wobei diese vor allem im Unterkiefer vorkommen. Verletzungen des Nervus alveo- laris inferior sind eine ernste Komplikation mit Inzidenzen für transiente Nervschäden bis zu 24% und persistierenden Schädigungen bis zu 11%.


Trigeminal Nerve Injuries , Humans , Dental Implantation/adverse effects , Dental Implantation, Endosseous/adverse effects , Dental Implants/adverse effects , Emergencies , Postoperative Complications/etiology , Trigeminal Nerve Injuries/etiology
5.
Int J Implant Dent ; 10(1): 30, 2024 Jun 10.
Article En | MEDLINE | ID: mdl-38856876

PURPOSE: This non-interventional study investigates variations in the type and frequency of late complications linked to novel zygomatic implant designs, installed adhering to the Zygoma Anatomy-Guided Approach (ZAGA) concept, over an extended follow-up period of at least 3 years. METHODS: Consecutive patients presenting indications for treatment with ZIs were treated according to ZAGA recommendations. Implants were immediately loaded. The ORIS success criteria for prosthetic offset, stability, sinus changes and soft-tissue status were used to evaluate the outcome. RESULTS: Twenty patients were treated. Ten patients received two ZIs and regular implants; one received three ZIs plus regular implants, and nine received four ZIs. Fifty-nine ZIs were placed: thirty-six (61%) Straumann ZAGA-Flat implants and twenty-three (39%) Straumann ZAGA-Round implants. Four patients (20%) presented earlier sinus floor discontinuities. Fifteen patients (75%) had prior sinus opacities. Nineteen patients were followed for between 38 and 53 months (mean 46.5 months). One patient dropped out after 20 months. When comparing pre-surgical CBCT with post-surgical CBCT, 84.7% of the sites presented identical or less sinus opacity; nine locations (15%) showed decreased, and another nine increased (15%) post-surgical sinus opacity. Fifty-three ZIs (89.8%) maintained stable soft tissue. Six ZIs had recessions with no signs of infection. ZIs and prosthesis survival rate was 100%. CONCLUSIONS: The study highlights the effectiveness of ZAGA-based zygomatic implant rehabilitations using Round and Flat designs. Despite patient number constraints, minimal changes in the frequency of late complications from the 1-year follow-up were observed. 100% implant and prosthesis survival rate over a mean follow-up of 46.5 months is reported.


Dental Implants , Zygoma , Humans , Zygoma/surgery , Zygoma/diagnostic imaging , Follow-Up Studies , Male , Female , Middle Aged , Dental Implants/adverse effects , Treatment Outcome , Aged , Adult , Dental Prosthesis Design
6.
Eur Rev Med Pharmacol Sci ; 28(10): 3566-3582, 2024 May.
Article En | MEDLINE | ID: mdl-38856132

OBJECTIVE: Periimplantitis (PI) is a complex multifactorial chronic disease caused by interactions between bacteria, host immune-inflammatory responses, and genetic or environmental factors that modify buccal eutrophism. In daily clinical practice, an increase in the prevalence of PI (8%) determined the need to establish the PI causes and set optimal therapeutic strategies. The interleukin family (IL-1), a group of cytokines, triggers and perpetuates peri-implantitis. Therefore, they could be used as biomarkers for diagnosis and treatment. This systematic review aimed to analyze the correlation between IL-1 allelic polymorphism (IL-1A -889, IL-1ß -511, IL-1ß +3954) and the PI disease. MATERIALS AND METHODS: Selected databases were PubMed, Scopus, and Cochrane Library. The search strategy included the following terms: "dental implants"; "periimplantitis"; "interleukin-IL-1"; "polymorphism"; "perimplant bone loss". Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) guidelines were followed. A meta-analysis was conducted on five of 40 review articles. p-values, confidence intervals (CI), and Odds ratios (OR) were assessed. In 4 articles, the p-value was lower than 0.05, confirming the statistical significance of the result. RESULTS: The prevalence of the selected studies reported the existence of a causal association between polymorphisms of IL-1 and the onset of peri-implantitis, especially for IL-1 allelic variants associated with further polymorphic genes encoding for IL-6, tumor necrosis factor-alpha (TNF-α), matrix metalloproteinases (MMP)-8, IL-1Na, IL-8, IL-18, osteopontin (OPN). In addition, the presence of the IL-1 polymorphism and PI is particularly higher in smokers, diabetes, and autoimmune disease patients. CONCLUSIONS: The detection of salivary biomarkers is, therefore, a diagnostic tool with a high potential to intercept the PI early and act with appropriate and non-invasive treatment. Due to the continued technological innovation in biomarkers and diagnostic sciences, further studies are needed to investigate the role of these biochemical mediators. The results of studies and the recent technological innovation in biomarkers and diagnostic sciences will allow further research to investigate the role of these biochemical mediators.


Interleukin-1 , Peri-Implantitis , Polymorphism, Genetic , Humans , Peri-Implantitis/genetics , Interleukin-1/genetics , Dental Implants/adverse effects
7.
Clin Exp Dent Res ; 10(3): e883, 2024 Jun.
Article En | MEDLINE | ID: mdl-38853451

OBJECTIVE: The objective of this study was to investigate the effectiveness of testing for active matrix metalloproteinase-8 (aMMP-8) by a quantitative point-of-care (PoC), chairside lateral flow immunotest and azurocidin, in the peri-implant sulcular fluid (PISF), as biomarkers for the presence or absence of peri-implant diseases. BACKGROUND: Current research indicates that proinflammatory cytokines and extracellular matrix-degrading enzymes may be of value to diagnose and predict peri-implant disease initiation and progression, but more data are needed. METHODS: Eighty patients with implants were recruited. PISF samples were collected and quantitatively analyzed for aMMP-8 (chairside) and azurocidin with ELISA. Radiographic assessments and clinical indices (probing depth, probing attachment level, bleeding on probing, and plaque) were recorded after sampling. Kruskal-Wallis test and pairwise post hoc Dunn-Bonferroni test were used to relate aMMP-8 levels and azurocidin levels to clinical parameters. The diagnostic ability of aMMP-8 (ng/mL) and azurocidin was analyzed by receiver operator curve analysis. Area under the curve (AUC) was calculated and the Spearman's rho, and the coefficient of determination (R2) were used to calculate the correlations between aMMP-8, azurocidin, and periodontal parameters. RESULTS: Statistically significant differences were observed for aMMP-8 levels but not for azurocidin between healthy implants, implants with mucositis, and those with peri-implantitis (13.65 ± 7.18, 32.33 ± 21.20, and 73.07 ± 43.93 ng/mL, respectively), (Kruskall-Wallis test p < .05). The aMMP-8 test with a threshold of 20 ng/mL has a sensitivity of 71.7% and a specificity of 77.8% to identify peri-implantitis and healthy implants, respectively. AUC was found to be 0.814, and the accuracy of the method reaches 73.8%. Above a cutoff value of 33.7 ng/mL of aMMP-8, the accuracy of the test to detect peri-implantitis reaches 77.5% in relation to 62.5% of BoP from the same site. CONCLUSION: Taken collectively, present data indicate that the aMMP-8 PoC lateral flow immunotest can be a beneficial, adjunctive diagnostic quantitative tool for real-time screening for peri-implant diseases.


Biomarkers , Dental Implants , Gingival Crevicular Fluid , Matrix Metalloproteinase 8 , Peri-Implantitis , Humans , Matrix Metalloproteinase 8/analysis , Matrix Metalloproteinase 8/metabolism , Biomarkers/analysis , Biomarkers/metabolism , Male , Female , Middle Aged , Peri-Implantitis/diagnosis , Peri-Implantitis/metabolism , Aged , Dental Implants/adverse effects , Gingival Crevicular Fluid/chemistry , Gingival Crevicular Fluid/metabolism , Adult , Enzyme-Linked Immunosorbent Assay/methods , Periodontal Index , ROC Curve , Blood Proteins , Antimicrobial Cationic Peptides
8.
Braz Oral Res ; 38: e040, 2024.
Article En | MEDLINE | ID: mdl-38747827

Peri-implant diseases, including peri-implant mucositis (PIM) and peri-implantitis, are a chronic inflammatory disorder triggered by bacterial biofilm in susceptible hosts. Potential risk factors for peri-implant diseases include smoking, dental plaque accumulation, poor oral hygiene, genetics, and absence of peri-implant keratinized mucosa. This cohort study aimed to evaluate the influence of patient-, implant-, and prosthetic-related factors on PIM and peri-implant bone loss (PBL) around dental implants after 1 year of loading. A total of 54 subjects (22 males and 32 females) were included in the study. Peri-implant clinical parameters were assessed and standardized periapical radiographs of each dental implant were obtained 15 days after the definitive prosthesis installation (baseline) and at 3, 6, and 12 months of follow-up. A total of 173 implants were evaluated. PIM affected 44.8% of the implants and no significant association was found between the investigated parameters and PIM incidence, except for type of implant connection. A significantly higher incidence of PIM (80.0%) was observed for implants with internal hexagon connection type after 1 year of follow-up (p = 0.015). Moreover, a mean PBL of 0.35 ± 1.89 mm was observed and no dental implant was affected by peri-implantitis after 1 year of function. No specific influence of patient, implant, or prosthetic factors on PBL was observed. No association was found between the occurrence of PIM/PBL and the patient-, implant-, and prosthetic-related factors investigated in this cohort study, except for the type of dental-implant connection.


Alveolar Bone Loss , Dental Implants , Peri-Implantitis , Stomatitis , Humans , Female , Male , Middle Aged , Dental Implants/adverse effects , Alveolar Bone Loss/etiology , Adult , Risk Factors , Peri-Implantitis/etiology , Stomatitis/etiology , Time Factors , Aged , Cohort Studies , Statistics, Nonparametric , Young Adult
9.
Discov Med ; 36(184): 874-881, 2024 May.
Article En | MEDLINE | ID: mdl-38798248

The number of chronic kidney disease (CKD) patients requiring renal replacement therapy is increasing, often exhibiting oral manifestations including periodontal disease, gingival hyperplasia, altered saliva composition, and uremic stomatitis. Uremic stomatitis, xerostomia, and candidiasis are very frequent, particularly among patients undergoing dialysis or kidney transplant recipients. CKD patients also experience profound alterations in bone metabolism inherent in the homeostasis of calcium, phosphorus, vitamin D, parathyroid hormone, and fibroblast growth factor (FGF). These alterations lead to demineralization of the jaw bones, reduced bone trabeculae, reduced cortical bone thickness, fibrocystic bone lesions, bone fractures, and delayed wound healing post-tooth extraction. Consequently, oral health management of elderly hemodialysis patients poses serious clinical problems. This review focused on the oral health and rehabilitation of patients with CKD or on dialysis.


Dental Implants , Oral Health , Renal Insufficiency, Chronic , Humans , Renal Insufficiency, Chronic/complications , Renal Insufficiency, Chronic/therapy , Dental Implants/adverse effects , Oral Surgical Procedures/adverse effects , Oral Surgical Procedures/methods , Renal Dialysis/adverse effects
10.
Int J Oral Implantol (Berl) ; 17(2): 137-161, 2024 May 27.
Article En | MEDLINE | ID: mdl-38801329

PURPOSE: To provide an overview of the outcomes of the use of autogenous platelet concentrates in immediate implant placement. MATERIALS AND METHODS: Based on an a priori protocol, a systematic search was performed of the National Library of Medicine (MEDLINE via PubMed), Embase and Scopus databases. Randomised and non-randomised controlled clinical trials on immediate implant placement including at least one study arm with use of platelet-rich fibrin or platelet-rich plasma as a gap filler between immediately placed implants and the alveolar bone were included. A random-effects meta-analysis model was built to assess the primary outcomes of marginal bone loss and probing pocket depths between test (platelet concentrates) and control (no graft or other graft materials) groups. A risk of bias assessment was performed and the Grading of Recommendations Assessment, Development and Evaluation approach was used to assess the certainty of evidence. RESULTS: A total of 20 trials (595 immediate implants placed in 454 individuals) were included in the meta-analytic model. Based on the data from studies with a minimum post-prosthetic loading period of 6 months after immediate implant placement, overall, the application of platelet concentrates was associated with significantly lower marginal bone loss and probing pocket depth compared to the control groups (mean difference -0.36 mm; P < 0.01 and mean difference -0.47 mm; P < 0.01, respectively). No additional benefit of application of platelet concentrates was detected regarding primary stability of immediate implants. Subgroup analysis revealed significantly lower marginal bone loss with xenogeneic bone alone compared to platelet concentrates alone as grafting material in immediate implant placement (mean difference 0.66 mm; P < 0.01). Evidence on soft tissue outcomes and aesthetic parameters was scarce. CONCLUSIONS: A low level of certainty based on the Grading of Recommendations Assessment, Development and Evaluation approach indicates superior outcomes in terms of marginal bone loss and probing pocket depth in immediate implant placement with the use of platelet concentrates versus no graft. Future research should be tailored towards a standardised protocol for preparation of platelet concentrates and inclusion of soft tissue and aesthetic outcomes as well.


Platelet-Rich Fibrin , Humans , Immediate Dental Implant Loading/methods , Platelet-Rich Plasma , Controlled Clinical Trials as Topic , Dental Implants/adverse effects , Alveolar Bone Loss , Prospective Studies , Treatment Outcome
12.
Br Dent J ; 236(10): 759-763, 2024 May.
Article En | MEDLINE | ID: mdl-38789752

This article forms part of the themed issue on dental implants, with the general dentist being the main intended reader and with particular relevance to primary care dental professionals. It aims to describe the various characteristics of the implant in health, address contemporary developments in implant dentistry and offer some novel insights on the prevention of peri-implant diseases. A healthy implant exhibits specific histological, clinical and radiographic characteristics. Understanding such aspects leads to proper diagnosis and measures to maintain tissue integrity and prevent the development and progression of peri-implant diseases. Moreover, internationally and widely accepted definitions and recommendations based on expert consensus have been put forward to guide day-to-day clinical practice. This information should provide general practitioners with the means necessary to achieve the best possible outcome for their patients.


Dental Implants , Peri-Implantitis , Humans , Dental Implants/adverse effects , Peri-Implantitis/diagnostic imaging , Peri-Implantitis/prevention & control , Peri-Implantitis/diagnosis , Dental Implantation, Endosseous/methods
13.
Br Dent J ; 236(10): 765-771, 2024 May.
Article En | MEDLINE | ID: mdl-38789753

Current research has identified features of the prosthetic design with potential to significantly impact the long-term health of peri-implant tissues, while the choice of prosthetic components is also shown to be critical in an effort to reduce long-term complications of implant therapy. Overcontouring of the prosthesis emergence profile has been associated with marginal bone loss, recession and peri-implantitis, while the mucosal emergence angle is shown to have a strong association with peri-implant tissue inflammation. Further elements of interest include convexity/concavity of the restoration, the prosthetic connection and the different geometric configurations of junctions, as well as the peri-implant tissue dimensions. With regards to implant components, the choice between original and third-party-manufactured components might come with implications, as differences in material and microgeometry might impact precision of fit and overall performance, potentially leading to complications. Scrutiny of the specifications and manufacturing is essential when third-party-manufactured components are considered.The aim of this narrative review was to summarise the current evidence with regards to the restorative features of the implant prosthesis and also the selection of prosthetic components which can have implications for the long-term success of the implant therapy. Furthermore, the review aimed at interpretating current scientific evidence into meaningful strategies and recommendations to implement in clinical practice of implant dentistry.


Dental Implants , Dental Prosthesis Design , Humans , Dental Implants/adverse effects , Peri-Implantitis/etiology , Peri-Implantitis/prevention & control
14.
Br Dent J ; 236(10): 753-757, 2024 May.
Article En | MEDLINE | ID: mdl-38789751

The use of implants to replace missing teeth is now commonplace and practised by clinicians worldwide in both general and specialist practice. There is an abundance of evidence on the general success of implant treatment. As well as reviewing the history of dental implants, this narrative review will discuss the merits and successful placement of tissue-level verses bone-level implants. Furthermore, the article will evaluate the concept and benefits of platform switching for implant treatment. Finally, with the increased placement of implants, this narrative paper will review how different titanium surfaces impact on the risk of peri-implantitis.


Dental Implants , Humans , Dental Implants/adverse effects , Peri-Implantitis/etiology , Peri-Implantitis/prevention & control , Dental Implantation, Endosseous/methods , Dental Prosthesis Design , Titanium
15.
Br Dent J ; 236(10): 797-801, 2024 May.
Article En | MEDLINE | ID: mdl-38789757

Peri-implant mucositis is characterised by inflammation of soft tissues surrounding a dental implant without associated bone loss beyond initial remodelling. Early detection and timely intervention are critical to prevent its progression to peri-implantitis. This paper focuses on various treatment options for treating peri-implant mucositis. The cornerstone of professional treatment lies in the mechanical disruption and removal of microbial biofilms around the implant. This can be achieved through careful use of manual or powered instruments, such as ultrasonic scalers or air polishing devices. However, there is a need for further research to determine the most effective single approach for treating peri-implant mucositis. Current evidence does not support the combination of mechanical debridement with locally administered antibiotics. Contrarily, evidence strongly supports the removal, cleaning, and modifications of prostheses to improve both self-performance and professional cleanability. The use of adjunctive therapies like photodynamic therapy and diode laser, in conjunction with mechanical instrumentation, is not currently recommended due to the limited strength of available evidence. Preventive measures emphasise the importance of comprehensive oral hygiene care, encompassing professional guidance and at-home practices, to manage biofilms effectively. This encompasses oral hygiene instruction, regular debridement, and maintenance care. Supporting peri-implant therapy is also vital for ongoing implant monitoring, preventing the recurrence of mucositis, and halting its progression to peri-implantitis. This multifaceted approach is key to effectively managing and treating peri-implant mucositis.


Biofilms , Dental Implants , Peri-Implantitis , Stomatitis , Humans , Dental Implants/adverse effects , Peri-Implantitis/therapy , Peri-Implantitis/prevention & control , Stomatitis/therapy , Stomatitis/prevention & control , Stomatitis/etiology , Clinical Decision-Making , Oral Hygiene/methods , Debridement/methods , Anti-Bacterial Agents/therapeutic use
16.
J Trace Elem Med Biol ; 84: 127464, 2024 Jul.
Article En | MEDLINE | ID: mdl-38703537

INTRODUCTION: Titanium is considered to be an inert material owing to the ability of the material to form a passive titanium oxide layer. However, once the titanium oxide layer is lost, it can lead to exposure of the underlying titanium substructure and can undergo corrosion. SUMMARY: The article explores the role of titanium ions and particles from dental implants on cells, cytokine release, and on the systemic redistribution of these particles as well as theories proposed to elucidate the effects of these particles on peri-implant inflammation based on evidence from in-vitro, human, and animal studies. Titanium particles and ions have a pro-inflammatory and cytotoxic effect on cells and promote the release of pro-inflammatory mediators like cytokines. Three theories to explain etiopathogenesis have been proposed, one based on microbial dysbiosis, the second based on titanium particles and ions and the third based on a synergistic effect between microbiome and titanium particles on the host. CONCLUSION: There is clear evidence from in-vitro and limited human and animal studies that titanium particles released from dental implants have a detrimental effect on cells directly and through the release of pro-inflammatory cytokines. Future clinical and translational studies are required to clarify the role of titanium particles and ions in peri-implant inflammation and the etiopathogenesis of peri-implantitis.


Cytokines , Dental Implants , Titanium , Humans , Dental Implants/adverse effects , Titanium/chemistry , Titanium/adverse effects , Cytokines/metabolism , Corrosion , Animals
17.
Int J Implant Dent ; 10(1): 22, 2024 May 03.
Article En | MEDLINE | ID: mdl-38700739

The aim of the presented retrospective study was to evaluate the early crestal bone changes around an implant type designed for high primary stability. A total number of 111 implants placed clinically were evaluated regarding insertion torque, bone density, implant stability quotient (ISQ) and early crestal bone loss from standardized digital radiographs. The implants were allocated in two groups: the "regular torque " group contained all implants that achieved less than 50 Ncm as final insertion torque (n = 63) and the "high torque" group contained the implants that achieved 50-80 Ncm (n = 48). To avoid possible damage either to the implant´s inner connection or to the bone by application of excessive force, a limit of 80 Ncm was set for all surgeries. All implants underwent submerged healing for three months. ISQ measurements and standardized digital radiographs were taken at day of insertion and at day of second stage surgery. The bone loss was measured on the mesial and distal aspect of the implant. The data evaluation showed the following results: Mean bone loss was 0.27 ± 0.30 mm for the high torque group and 0.24 ± 0.27 mm for the regular torque group. The difference was not statistically significant (p = 0.552). In the two groups, no complications nor implant loss occurred. For the evaluated implant type, there was no significant difference in crestal bone changes and complication rate between high and regular insertion torque in the early healing period.


Dental Implantation, Endosseous , Dental Implants , Torque , Humans , Retrospective Studies , Dental Implants/adverse effects , Dental Implantation, Endosseous/methods , Female , Male , Middle Aged , Bone Density , Alveolar Bone Loss/diagnostic imaging , Aged , Adult
18.
Clin Implant Dent Relat Res ; 26(3): 482-508, 2024 Jun.
Article En | MEDLINE | ID: mdl-38720611

INTRODUCTION: Dental implants are widely employed as dependable replacements for lost teeth. However, it is crucial to establish, solely through prospective cohort studies, whether a history of periodontitis indeed constitutes a significant risk factor for implant failure. METHODS: A systematic literature search was conducted in October 2022 in several electronic databases with subsequent manual updates. Only original prospective cohort studies evaluating the implant (loss) rate ≥1 year after implant loading were included. Logarithmic risk ratio and weighted mean differences were calculated. Study results were summarized using random effects meta-analyses evaluated by trial sequential analyses. The Newcastle-Ottawa scale evaluated study bias and the GRADE approach assessed the certainty/quality of the evidence. RESULTS: A total of 14 publications reporting on 12 prospective cohort studies were included. Low evidence certainty/quality evidence due to the absence of randomized clinical trials revealed significantly greater odds of failure in patients with a history of periodontitis at follow-ups both after ≤5 years (RR = 1.62; 95% CI: 1.71-2.37; p = 0.013) and >5 years (RR = 2.26; 95% CI: 1.12-4.53; p = 0.023). The incidence of peri-implantitis (RR = 4.09; 95% CI: 1.93-8.58; p < 0.001) and the weighted mean (WM) of marginal bone loss (WM difference = 0.75 mm; 95% CI: 0.18-1.31; p < 0.05) were statistically significantly greater in the periodontally compromised group, whereas there was no significant difference between the two groups for peri-implant probing depth. CONCLUSION: A history of periodontitis can be considered a significant risk factor for incident implant failure, peri-implantitis, and greater marginal bone loss.


Dental Implants , Dental Restoration Failure , Peri-Implantitis , Periodontitis , Humans , Peri-Implantitis/etiology , Risk Factors , Periodontitis/complications , Dental Implants/adverse effects , Prospective Studies , Incidence
19.
J Dent ; 146: 105094, 2024 Jul.
Article En | MEDLINE | ID: mdl-38788918

OBJECTIVE: The study answers the PECO question: "In adults with dental implants (P), do subjects suffering from type-2 diabetes or prediabetes (E) have worse peri-implant conditions (O) than subjects without type-2 diabetes and prediabetes (C)?". Prediabetes (5.7-6.4 % HbA1c), and the different qualities of glycemic control in type-2 diabetes; well-controlled (>8 % HbA1c), and poorly controlled (>8 % HbA1c) individuals; were classified according to the recommendations of the American Diabetes Association. DATA: Predefined search keys were used with search terms including: Dental implant, diabetes mellitus, glycemic control and HbA1c. SOURCES: An electronic search in the MEDLINE, Embase, and Cochrane libraries were conducted without any filters or language restrictions. Additionally, manual search of the reference lists were carried out to identify all relevant articles. STUDY SELECTION: Eligibility criteria were cohort, case-control and cross-sectional studies that answerd our PECO question with at least 1 year of follow-up. From a total of 2660 records, 35 articles (1761 individuals) were included in the analysis. Meta-analytic difference in means for crestal bone loss was 1.2 mm [95 % CI=0.4; 2.1] in patients with prediabetes, 1.8 mm [CI=1.0; 2.7] in poorly controlled patients, whereas 0.4 mm [CI=-0.3; 1.1] in well-controlled individuals. Meta-regression showed that 1 % increase in HbA1c increased crestal bone loss by 0.24 mm. CONCLUSIONS: Within the limitations of the study, patients with poorly controlled type-2 diabetes or prediabetes may have worse peri-implant conditions compared to patients without diabetes and well-controlled type-2 diabetes. Well-controlled type-2 diabetes is not a risk indicator for peri-implant diseases. CLINICAL SIGNIFICANCE: Clinicians should measure blood HbA1c levels when planning implant-supported restorations, thus patients with undiagnosed or poorly controlled type-2 diabetes can be identified, that allows for glycemic level adjustment prior to dental implant surgery, ensuring peri-implant health. PROTOCOL REGISTRATION NUMBER: (CRD42022375263).


Dental Implants , Diabetes Mellitus, Type 2 , Glycated Hemoglobin , Prediabetic State , Humans , Diabetes Mellitus, Type 2/complications , Diabetes Mellitus, Type 2/blood , Prediabetic State/blood , Dental Implants/adverse effects , Glycated Hemoglobin/analysis , Risk Factors , Peri-Implantitis/etiology , Glycemic Control
20.
Br Dent J ; 236(10): 781-789, 2024 May.
Article En | MEDLINE | ID: mdl-38789755

The long-term maintenance or restoration of peri-implant tissues' health depends on the strategic implementation of preventive measures and interventions. These measures should be initiated before implant placement and continued throughout a patient's lifetime, as part of a tailored and comprehensive supportive peri-implant care (SPIC) programme. Central to the clinical efforts of maintaining and rehabilitating peri-implant tissues are several key factors, including the ongoing assessment and frequent monitoring of tissue health and stability, proactive oral health promotion, the control of risk factors and indicators and the provision of professional plaque biofilm removal. It is of paramount importance to underline that SPIC should not limit its scope exclusively to patients already in a state of peri-implant health; in fact, it is imperative that it should extend its protective effect to individuals who have been previously diagnosed and treated for peri-implant diseases, focusing on preventing its recurrence and progression, thereby avoiding further complications, such as implant loss.This narrative review presents an overview of the current literature on the maintenance of peri-implant tissues' health and the steps of SPIC providing insights into the critical factors to be considered when managing dental implant patients in the general dental practice.


Dental Implants , Humans , Dental Implants/adverse effects , General Practice, Dental , Peri-Implantitis/prevention & control , Peri-Implantitis/etiology , Oral Health , Risk Factors
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