Active clinical trials for "Alveolar Bone Loss"

Tooth autotransplantation is a treatment option to replace tooth with imposible prognosis. In several cases the receipt site has a reduced bone dimension. This situation may be imposible the treatment with dental implants without bone reconstruction. Autotransplantation seem to improve the anatomic characteristic of the receipt site without any reconstruction approach. The aim of this study is to evaluate the bone dimension changes followed autotransplantation treatment.

The aim of this study is to evaluate the periodontal outcomes after applying antimicrobial photodynamic therapy with a novel photosensitizer as compared to LASER assisted scaling and root planing alone.

In this study, the investigators will evaluate the dimensional changes of alveolar bone in the preserved sites in comparison with extraction only conventional healed sockets, as well. Dimensional changes of the alveolar ridge contour after socket preservation in comparison to conventional tooth extraction. Evaluation the stability of implants placed at the preserved sockets. Histological evaluation of newly formed bone at the socket preserved sites in comparison with extracted only healed sites.

Vitamin D has become important for periodontal disease due to play a role in autoimmunity, bone mineral metabolism and inflammation. Our aim was to investigate the relation between serum 25-hydroxy vitamin D levels, clinical periodontal parameters and blood serum biomarkers. The subjects were evaluated in 2 groups as chronic periodontitis (n= 30) and periodontally healthy subjects (n= 30). Periodontal parameters and fasting venous blood samples were taken from the subjects to assess each patient's periodontal status and for biochemical analyses (25-hydroxy vitamin D (25-OH vit D), osteoprotegerin (OPG), receptor activator of nuclear kappa B ligand (RANKL), C-telopeptide (CTx), tumor necrosis factor-α (TNF-α)).

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.

Background: Lateral maxillary sinus augmentation (MSA) is a predictable bone regeneration technique in case of atrophy of the posterior-upper maxilla. Aimed at obtaining quantity and quality of bone suitable for receiving osseointegrated implants, its success is largely due to the skill of the surgeon, but also to the characteristics of the biomaterial used. Methods: Twenty-four patients needing MSA were included in the study. The patients were randomly allocated to 3 different groups: Anorganic Bovine Bone Mineral (ABBM) as control, Tricalcium Phosphate (TCP) with or without hyaluronic acid (HA) as test groups. Nine months after MSA bone biopsies were harvested for the histomorphometric analysis. Secondary outcomes were mean bone gain, intraoperative and post-operative complications, implant insertion torque, implant failure and patient related outcome measures (PROMs).

The aim of this study is to evaluate the accuracy of pulp test in teeth presenting with deep periodontal pocket. The null hypothesis is no significant effect of periodontitis on the accuracy of pulp test.

The goal of this clinical trial to test the effect of periimplant soft tissue phenotype in the participants with implant placed and at least 1 year after implant loading. The main questions it aims to answer are: Is keratinized mucosal thickness (KMT) important in early marginal bone loss and peri implant health? Is keratinized gingival width (KGW) important in early marginal bone loss and and peri implant health? The researchers plan to include 80 implants in the study. These 80 implants will be divided into 2 groups in 2 different ways according to their KMT and KGW on their buccal surfaces: KMT ≥2 mm are included in the adequate KMT, and those with KMT<2 mm are in the insufficient KMT group. Those with KGW≥2 mm are adequate KGW, those with KGW<2 mm are adequate KGW. The researchers will assess marginal bone loss around the implant using radiographs and collect peri-implant crevicular fluid (PICF) using paper strips. Another researchers will measure the Receptor Activator Of Nuclear Factor-Kappa B Ligand (RANKL), Osteoprotegerin (OPG), Tumor Necrosis Factor Alpha (TNF-α), MicroRNA-223 (MiRNA-223), MicroRNA-27a (MiRNA-27a) levels in the collected PICF. They will compare radiographic bone loss and biomarker levels in groups.

The present study was compared the level of alveolar bone loss, clinical parameters and IL-1β in PICF in one- or two-stage surgical procedures. Half of the patients were performed tissue level implant while other half were performed bone level implant.

Crestal bone and soft tissue stability around implants is an important issue in implant dentistry. Initial vertical mucosal tissue thickness was shown to be one of the factors having impact on bone stability. However, there is lack of data in the literature regarding the relationship between mucosal thickness and marginal bone loss around implants. Berglundh and Lindhe in an animal study reported that thin mucosal tissue causes significantly more crestal bone resorption around implants. In addition, clinical research regarding the effects of tissue thickness on bone and soft tissue stability around implants is lacking. The aim of this clinical study is to evaluate the influence of mucosal tissue thickness on soft and hard tissue changes around implants.