Evaluation of Gingival Health Parameters in Hybrid CAD / CAM Crowns Produced After Different Retraction Processes

Not Applicable

Completed

• Conditions: Gingival Disease; Periodontal Disease
• Interventions: Procedure: mechanical cord usage

• Registration Number: NCT03816930
• Lead Sponsor: Yuzuncu Yıl University

Brief Summary

Clinically, the gingival retraction dentistry itself has found wide uses. It has achieved the use of subgingival and gingival crowns in fixed prostheses, cervical abrasion in restorative dentistry, management of root caries and root sensitivity, and recently in the use of appropriate measurements to improve the marginal fit of implant prostheses.There are three different retraction procedures described in the literature: mechanical, mechanical-chemical (chemically impregnated cords or matrix in injectable form) and surgery (electrosurgical, laser, cauterization, etc.)The mechanical method of retraction cords is not always suitable for patients' existing pocket depth, the necessity of using different combinations in shallow or deep pockets, the potential for limited bleeding control in chemically impregnated cords and the toxicity values in those who interact with chemical have led researchers to search for alternative methods. Especially inflammed gingiva is very sensitive to mechanical and chemical trauma. Studies have reported that gingival inflammation, pain, pocket formation, gingival withdrawal, increased bleeding and wound contamination occurred following retraction cord application. However, it is a known fact that the impression material is distorted or the accuracy of the measurement is decreased with the measurements taken without retraction. Nowadays, CAD / CAM (computer-aided design / computer-aided manufacturing) devices, which are designed to overcome these problems and eliminate the errors related to the measurement material, are the first step to be taken with a clear measure.Gingival retraction is recommended to improve the success of scanners in all restorations performed at the gingival or subgingival endpoint. Therefore, in our study, crown restorations will be produced from hybrid blocks by means of CAD / CAM device in order to evaluate the interaction of gingival health with hybrid blocks and to provide the latest technology and standardization.

Detailed Description

Not available

Study Timeline

• Study Start: 2019-01-17
• Study First Submitted: 2019-01-17
• Study First Submitted QC: 2019-01-23
• Study First Posted: 2019-01-25
• Primary Completion: 2020-01-17
• Study Completion: 2020-04-17
• Status Verified: 2021-04
• Last Update Submitted: 2021-04-21
• Last Update Posted: 2021-04-22

Recruitment & Eligibility

• Status: COMPLETED
• Sex: All
• Target Recruitment: 52

Inclusion Criteria

• Being systemically healthy
• To indicate crown restoration in mandibular molar teeth
• To be vital to the preparation of the crown of the teeth

Exclusion Criteria

• Systemically unhealthy individuals
• Endodontic treatment of mandibular molar teeth
• Mandibular molar female individuals drawn for various reasons
• Pregnant women
• Periodontally unhealthy individuals

Study & Design

• Study Type: INTERVENTIONAL
• Study Design: PARALLEL

Arm && Interventions

Group	Intervention	Description
Chemical contained retraction usage	mechanical cord usage	Chemical retraction
MZ-6 laser tip used throughing	mechanical cord usage	Laser retraction
Mechanical cord usage	mechanical cord usage	Mechanical retraction

Primary Outcome Measures

Name	Time	Method
Retraction methods or procedures effects on gingival health	3-12 months	Probing depth is one of the criteria that shows the gingival health. In each control sessions same researcher measure the probing depth as mm via a periodontal probe.

Trial Locations

Locations (1)

Beyza Ünalan Değirmenci; 🇹🇷 Van, Turkey