Outcomes on Teeth Prepared With BOPT

Study Overview
=================
Brief Summary
-----------------
The aim of this study is to evaluate the clinical and biological behavior of full coverage restorations on teeth prepared without finish line in a prospective clinical study.

Detailed Description
-----------------
The purpose is to evaluate the clinical and biological behavior of full coverage restorations on teeth prepared without finish line. This prospective study included 149 teeth treated using biologically oriented preparation technique (BOPT). The sample (149 teeth) was divided into two groups: Seventy four teeth restored with crowns, and 75 teeth supporting fixed partial dentures (FPD). Restorations were fabricated with zirconium oxide cores and ceramic coverings. Patients attended regular annual check-ups when probe depth, presence of inflammation with bleeding on probing, presence of plaque, gingival thickness, marginal stability, biological or mechanical complications, and the patient's level of satisfaction were registered.

Official Title
-----------------
Periodontal and Prosthetic Outcomes on Teeth Prepared With Biologically Oriented Preparation Technique: Prospective Clinical Study

Conditions
-----------------
Outcome, Soft Tissues, Prosthetic

Intervention / Treatment
-----------------
* Procedure: Retreatment of teeth prepared without finish line


Participation Criteria
=================
Eligibility Criteria
-----------------
Inclusion Criteria: adult patients (aged over 18 years). non-smokers. periodontally healthy or periodontally managed. patients who had undergone restoration with fixed prostheses (one-piece crowns or fixed partial dentures FPDs) in the aesthetic zone (incisors, canines, premolars, first molars), which needed to be replaced due to biological, esthetic or some other type of problem. Exclusion Criteria: patients who were smokers. patients who presented unmanaged parafunctional habits. patients with severe systemic diseases.

Ages Eligible for Study
-----------------
Minimum Age: 18 Years

Sexes Eligible for Study
-----------------
All

Accepts Healthy Volunteers
-----------------
No

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

Design Details

Primary Purpose: Treatment
Intervention Model: Single Group Assignment
Interventional Model Description: This prospective study included 149 teeth treated using biologically oriented preparation technique (BOPT). The sample (149 teeth) was divided into two groups: Seventy four teeth restored with crowns, and 75 teeth supporting fixed partial dentures (FPD).
Masking: None (Open Label)


Arms and Interventions

| Participant Group/Arm | Intervention/Treatment |
| --- | --- |
| Experimental: Clinical behaviour on teeth prepared without finish line<br>Evaluate the clinical behavior of restorations placed on teeth prepared without finish line, monitoring periodontal status as well as the prostheses to assess stability and treatment predictability. | Procedure: Retreatment of teeth prepared without finish line<br>* Retreatment of teeth treated using biologically oriented preparation technique (BOPT). The sample (149 teeth) was divided into two groups: Seventy four teeth restored with crowns, and 75 teeth supporting fixed partial dentures (FPD).<br>|

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

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| A possible periodontal complications | Analyze periodontal outcome on teeth prepared with biologically oriented preparation technique | Through study completion, an average of 15 years. | 
| biological or mechanical prosthetic complications | Analyze prosthetic outcome on teeth prepared with biologically oriented preparation technique | Through study completion, an average of 15 years. | 

Secondary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Patient's level of satisfaction with treatment assessed by means of a visual analogue scale (VAS). | Patient's satisfaction was assesed using a ''Visual Analogue Scale'' (VAS). In wich 0 is the the minimum and 10 de maximum value, and whether higher scores mean a better outcome. | Through study completion, an average of 15 years. | 

 Terms related to the study
=================
Keywords Provided by Centre Hospitalier Valida
-----------------
BOPT, dental preparation, dental crown, zirconia, periodontal health