Restorations and Furcation Involvement on Molars

Study Overview
=================
Brief Summary
-----------------
The aim of this study will be to analyze the relationship between the presence of second class restorations (interproximal fillings) or prostheses (crowns, bridges) on molar teeth and the presence of bone resorption between the roots of the latter. Patients with this type of restorations will be identified and a non-interventional clinical and radiographic analysis will be conducted.

Detailed Description
-----------------
Patients who have a molar tooth reconstructed with a second class filling according to Black, or a with crown or that is abutment of a prosthetic bridge will be included in the study provided they have at least one other intact molar. The molars included in the study do not have to be wisdom teeth. In these patients, in addition to the presence of furcations (bone resorption in the space between the roots), the probing depth (PD), the loss of clinical attachment (CAL), bleeding on probing ( BOP), mobility, width of the keratinized tissue, the length of the root trunk (measured radiographically), the presence or absence of endodontic treatments (evaluated on the radiography), the anatomy of the roots (widely separated, fused, separated but fused) and the presence of enamel projections will be recorded. Data will be analyzed with utilizing Pearson chi-square and the pair-wise t test. The analysis of these data will provide us with evidence on the influence that interproximal restorations and fixed prostheses, in the presence of other co-factors, have on the presence of furcations in molars.

Official Title
-----------------
Relationship Between Molar Restoration and Furcation Involvement

Conditions
-----------------
Furcation Defects

Intervention / Treatment
-----------------
* Diagnostic Test: Periodontal probing


Participation Criteria
=================
Eligibility Criteria
-----------------
Inclusion Criteria: Patients who have molars both with and without restorations Restorations presents for at least 5 years Exclusion Criteria: Patients who do not want to undergo evaluation Patients who cannot undergo radiation (pregnant women) Patients who do not have at least one other unrestored molar
Sexes Eligible for Study
-----------------
All

Accepts Healthy Volunteers
-----------------
Accepts Healthy Volunteers

Study Plan
=================
How is the study designed?
-----------------

Arms and Interventions

| Participant Group/Arm | Intervention/Treatment |
| --- | --- |
| Restored<br>Molars with a 2nd class restoration or a crown | Diagnostic Test: Periodontal probing<br>* The teeth involved will be probed to assess probing depth, presence of furcation, bleeding. A radiograph will be taken to assess the length of the root trunk and the presence of root canal treatment<br>* Other names: Radiograph;|
| Non-restored<br>Molars with no restorations | Diagnostic Test: Periodontal probing<br>* The teeth involved will be probed to assess probing depth, presence of furcation, bleeding. A radiograph will be taken to assess the length of the root trunk and the presence of root canal treatment<br>* Other names: Radiograph;|

What is the study measuring?
-----------------
Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Presence of furcation | The presence of bone resorption between the roots of the molar | At the time of evaluation, the first time the patients is seen (time 0) | 

 Terms related to the study
=================
Keywords Provided by Centre Hospitalier Valida
-----------------
Furcation Defects, Dental Restoration, Permanent, Dental Crowns