Active clinical trials for "Tooth Loss"

Compare two different types of abutments (molded abutments and computer-designed 3D printed abutments) in terms of the amount of bone loss, and depth of periodontal pockets around the implant during different periods.

This case-control study aims to investigate the association of severe COPD with oral health.

The aim of the study was to determine whether implant length and the crown-to-implant (C/I) ratio influence implant stability and the loss of the surrounding marginal bone, and whether short implants can be used instead of sinus augmentation procedures.

This study is being conducted to compare the outcomes of two separate surgical techniques used in tooth extraction and ridge preservation. Ridge preservation is done to potentially minimize the amount of bone loss that occurs between the tooth extraction and implant or bridge placement, as compared to leaving the extraction site empty. There are two techniques that are commonly used for these procedures, either to close the surgical site of the extracted tooth with sutures (closed flap technique) or to leave the extraction site open to heal naturally (open flap technique). In the open flap technique there will be sutures used to secure and hold down the material used to cover the wound, called a non-resorbable membrane. The flaps will remain in their natural position, the site will fill up naturally with new tissue from the bottom up and then close itself in from the sides. The investigators want to see which technique offers better healing and reduces bone loss.

The purpose of this investigator-initiated study is to compare new bone formation through histomorphometric analysis following maxillary sinus augmentation using two different bone graft materials. A total of twenty, sinus augmentation via a lateral approach will be performed for subjects requiring sinus augmentation for implant placement and randomly divided into 2 groups. These subjects will receive one of two different bone graft materials: 1) Anorganic bovine bone matrix- InterOss (Group A), 2) Anorganic bovine bone matrix- Bio-oss (Group B). At the time of implant placement (eight months after the sinus augmentation procedure), two bone biopsies will be collected from augmented site for the histomorphometric analysis. The percentage of vital bone will be measured and analyzed statistically, also the following will be measured: percentage of non-vital bone, percentage of non-bone material (xenograft), and the percentage of connective tissue.

This study aims at assessing the hard and soft tissues remodelling of the alveolar crest after extraction socket managements in the aesthetic areas: 3D radiographic evaluation (CT scan) was performed post extraction and 3 months after at the time of implant placement. (Outcomes 1: Hard tissues analyses ) Impressions, models and 3D analyses of the treated area allowed studying external soft tissue remodeling at different time points after extraction. (Outcomes 2: Soft tissues analyses )

Following tooth extraction ridge preservation procedure have been suggested to limit bone resorptive dimensional changes to facilitate prospective implant placement. While this is particularly true for anterior teeth, no evidence is available to establish clinical guidelines in posterior sites, i.e. following molar extraction. This research project will answer the following question: What are the dimensional changes of the hard and soft tissues encountered following molar extractions with and without ridge preservation?

The purpose of this study is to determine if regular rinsing with chlorhexidine is effective as a long-term preventive method for reducing the incidence of tooth loss in low income older adults. The true end-point of the study is tooth loss after five years of regular rinsing with chlorhexidine or a placebo; surrogate endpoints are periodontal disease, root and coronal decay.

Two hundred individuals will be formed according to the study and control groups: Group-1: coronavirus 2 (Covid-19) (+) patients (n=100) and Group-2: Healthy individuals (in which the volunteers will be included due to group-1) (n=100). Oral examinations including DMFT scores, salivary flow rate, visible gingival index scores and radiographs (OPG) will be performed on both groups on the 1st appointment. Oral swap samples will be collected with sterile swap brushes (Six sample for each person) on the 1st, 7th and 30th days to evaluate the salivary immunoglobulins (Immunoglobulin A (IgA), Immunoglobulin G (IgG), Immunoglobulin M (IgM)) and cytokine (IL-1, IL-6, IL-10) levels. Blood samples will be collected to validate the oral swap test results.

In an ongoing study new dental patients are screened to determine their risk of having undiagnosed pre-diabetes or diabetes based on risk factors readily known by the patient and signs of gum disease. Investigators further seek to assess if a post-identification intervention leads to a greater likelihood of study participants identified as potentially pre-diabetic or diabetic visiting their physician regarding their screening blood test results, and to improved health outcomes.