Active clinical trials for "Peri-Implantitis"

Introduction: It seems that some local and systemic factors can be associated with an increased incidence of peri-implant diseases. Predisposing to an increase inflammatory response when plaque is present. There is still controversy on which factors can be considered as risk indicators. One of them is the keratinized mucosa width (KM), that seems to facilitate plaque control around implants. Objectives: Assess the relationship between keratinized mucosa and the recurrence of mucositis, comparing bleeding on probing (BOP) in implants with mucositis for 24 weeks after implant disinfection therapy, the control group is defined by having KM ≥ 2 mm and the test group KM < 2 mm. Material and methods: 38 patients presenting one single implant each with a single screw retained crown loaded for at least 1 year. Periodontal maintenance therapy will be performed and oral hygiene instruction will be delivered. Follow up visits will be after 8, 12 and 24 weeks in which the following parameters will be registered: Keratinized Mucosa width, Attached mucosa, Gingival Index, Vestibule Depth, Mucosa Thickness. Probing Pocket Depth, Recession, modified Plaque Index, Bleeding on Probing, modified Bleeding Index. Also a microbiologic test will be taken in the implant sulcus before the periodontal maintenance therapy and at 24 weeks. A multilevel statistical analysis will be conducted comparing the control and the test group, adjusting for the correlation among multiple observations.

ABSTRACT Objective: Periodontitis and peri-implantitis are the irreversible destructive diseases of the periodontal and peri-implant tissues. The present study aimed to determine the receptor expressions of Peroxisome proliferative-activated receptor (PPAR)-γ, Retinoid X receptor (RXR)-α, and Vitamin D receptor (VDR) in the diseased tissues around teeth and dental implants. Methods: The study consisted of three groups as group 1; healthy controls (C, n=15), group 2; periodontitis patients with stage 3 grade B (P, n=15), and group 3; peri-implantitis patients (PI, n=15). Periodontal clinical parameters as the plaque index (PI), gingival index (GI) and clinical attachment levels (CAL) were recorded. Gingival biopsies were obtained from all participants and biopsy samples underwent histological tissue processing. Hematoxylin-eosin (H&E) and immunohistochemistry staining were performed. Total inflammatory cell counts and fibroblast cell density were evaluated on H&E-stained slides while PPAR-γ, RXR-α, and VDR were evaluated via immunohistochemistry.

The present study represents an extension of the previously concluded randomized clinical trial "Laser-Assisted Regenerative Surgical Therapy for Peri-implantitis" (HUM00124386). The aim of the study is to compare the adjunctive effect of laser over mechanical debridement alone in the maintenance of peri-implant tissues after surgical treatment of peri-implantitis (gum disease around implants).

Although smoking has been proposed as well, as a risk factor/indicator for peri-implantitis, there is currently no conclusive evidence. The current literature confronts the inconclusive evidence of tobacco for a risk factor. Therefore, the aim of the present investigation is to determine the association between tobacco and peri-implantitis in sample of patients who had received therapy implant-supported restorative therapy in a university setting. The present study was designed as a retrospective case control study in a sample of patients with implant-supported restorative therapy 7-19 years after restorative phase. The study was conducted at the Clinica Universitaria d'Odontologia (CUO) in the Universitat Internacional de Catalunya (UIC) for 1 month and was performed following the principles outlined in the Declaration of Helsinki (revised, amended, and clarified in 2013. Prior to enrol the study a written informed consent was signed. Patients provided with implant-supported restorative therapy between 2001-2013 was selected from the UIC database. The sample was divided in three groups: healthy patients, patients with mucositis and patients with peri-implantitis. During the examination, the clinician reviewed with the patient the Information and Medication History Forms and record the anthropometric, socio-demographic and clinical information. An initial questionnaire was conducted to obtain information regarding age, gender, medical history, medication, and health behaviour. Candidates underwent an oral pathology examination and a full-mouth probing using a standardize pressure (20N) probe SONDA PA_ON (Orange Dental®, Aspachstr, Biberach, Germany) to determine their periodontal and peri-implant status. All statistical analyses were performed with the package RStudio (V2.5). Descriptive characteristics regarding all the covariates were summarized. Periimplant bone loss (95% Confidence Interval - 95% CI) were calculated both at implant- and at patient-level. A multilevel regression model will be applied to evaluate the influence of some risk/protective indicators on the risk for peri-implant bone loss. Risk/protective indicators for periimplantitis will be studied using multilevel (mixed-effects) multivariate regression analyses (patient- and implant-level). Each potential indicator was tested individually by adding it to an empty model having as dependent variable the peri-implant status and testing the significance.

In recent years, dental implants have gained popularity as the treatment choice for replacement of missing teeth. With this, one of the late biological complications that arise is peri-implantitis. Based on a consensus conference in 2008, peri-implantitis was found in 28% and ≥ 56% of subjects and in 12% and 43% of implant sites (Zitzmann & Berglundh 2008). Detection of peri-implantitis is currently based on clinical parameters like probing depths and radiographic findings of bone loss. There is however no study that assess the variability of clinical probing and radiographic reading in relation to the true outline of the peri-implantitis lesion. The present study will measure variability of clinical probing and radiographs in relation to the true outline of the peri-implantitis lesion, as well as assess the use of 2 different bone substitutes in regenerating the lesions with a barrier membrane.

Smoking is a major risk factor for developing peri-implantitis so the current study is comparing inflammatory markers in smokers versus non smokers to know if they have a potential role in pathogenesis of peri-implantitis

Aim: To evaluate the effectiveness of a flapless surgical approach in the treatment of peri-implantitis and to explore the factors influencing disease resolution. Material and Methods: This case series involved patients with at least one implant diagnosed with peri-implantitis treated with a flapless surgical approach. Treatment consisted on mechanical debridement and chemical decontamination of the implant surface plus mucosal curettage combined with/without systemic antimicrobials and/or prostheses modification. Follow-up visits for supportive peri-implant care (SPIC) were scheduled at 6 and 12 weeks, and then every 3 months during the first 12 months. Clinical and radiographic parameters were assessed at baseline, 3 months and 12 months. Disease resolution defined as residual probing depths < 5 mm, ≤ 1 point of BOP, absence of suppuration and absence of progressive bone loss compared to pre-treatment bone levels was the main outcome variable. Multilevel regression analyses was used to identify predictors affecting the probability of disease resolution.

The general aim of this project is to investigate the long-term treatment outcome after implant therapy. The patients' satisfaction with implant treatment will be studied and correlated to biological and technical problems. The survival rates of implants at patient level and the degree of bone loss of remaining teeth and implants will be calculated. The levels of cytokines and bone loss markers in peri-implantitis sites and periodontal defects and at healthy sites will be analyzed in order to study the correlation between cytokine and bone loss marker levels, and clinical conditions. Independent variables which could be regarded as significant risk factors or risk predictors on the incidence of peri-implantitis are aimed to be identified

In the field of periodontics, periodontal support therapy has proven to be essential in preventing the incidence or recurrence of periodontal diseases. The protocol is designed according to the risk profile of a patient. For example, in the presence of the history of periodontal therapy, subgingival microbiota containing large numbers of spirochetes and mobile rods can recolonize pockets 4-8 weeks after scaling. Similarly, routine maintenance of dental implants has been recommended to prudently avoid peri-implant inflammation, Indeed, the understanding of the nature of the tissue around the implant and its pattern of disease would be important to consider, even surpassing importance. Recently, a systematic review by our group has identified the importance of maintenance therapy around implants because it can help prevent about 3 times patient-level frequency peri-implantitis. Henceforth, our primary goal was to study the influence in a cross-sectional study of the frequency of peri-implantitis patients according to their post-implant placement and corresponding prosthesis visits supportive peri-implant maintenance. As such, it will be shown: What are the local and systemic factors affecting the appearance of peri-implantitis The ideal frequency of supportive peri-implant maintenance in patients who do not develop peri-implant disease What is the population of patients who come to supportive peri-implant maintenance after placement of dental implants

Objectives: Inflammatory lesions develop in the tissues surrounding implants are referred to as peri-implant diseases. Oxidants, play a role in inflammatory lesions. The study aimed to determine oxidant and antioxidant levels in the saliva of patients with various levels of peri-implant diseases and the relationship between oxidative stress and peri-implant diseases. Material and methods: Sixty-seven patients with at least one dental implant applied in our clinic were included in the study. The patients were divided into 3 groups; with peri-implantitis (PI), with marginal bone loss (MBL) and with healthy peri-implant (HI) tissues. Twenty-one individuals who didn't have any dental implants were included the study as a healthy control group (HC). For oxidant concentration, total oxidant status (TOS), advanced oxidation protein products (AOPP), and for antioxidant concentration, total antioxidant status (TAS), were investigated.