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

Periodontal Disease Clinical Trial

Official title:

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

Clinical Trial Details — Status: Completed

Administrative data

• NCT number: NCT03816930
• Other study ID #: 05
• Status: Completed
• Phase: N/A
• Start date: January 17, 2019
• Est. completion date: April 17, 2020

Study information

• Verified date: April 2021
• Source: Yuzuncu Yil University
• Contact: n/a
• Is FDA regulated: No
• Study type: Interventional

Clinical Trial 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.

Recruitment information / eligibility

• Status: Completed
• Enrollment: 52
• Est. completion date: April 17, 2020
• Est. primary completion date: January 17, 2020
• Accepts healthy volunteers: Accepts Healthy Volunteers
• Gender: All
• Age group: 18 Years to 60 Years

Eligibility

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

Related Conditions & MeSH terms

• Gingival Disease
• Gingival Diseases
• Periodontal Disease
• Periodontal Diseases

Intervention

Procedure:
• mechanical cord usage
Due to the retraction procedures, same preparation conditions will be obtained.

Locations

Country	Name	City	State
Turkey	Beyza Ünalan Degirmenci	Van

Sponsors (1)

Lead Sponsor	Collaborator
Yuzuncu Yil University

Country where clinical trial is conducted

Turkey, 

References & Publications (8)

Ahmed SN, Donovan TE. Gingival displacement: Survey results of dentists' practice procedures. J Prosthet Dent. 2015 Jul;114(1):81-5.e1-2. doi: 10.1016/j.prosdent.2014.11.015. Epub 2015 Apr 24. — View Citation

Al-Ani A, Bennani V, Chandler NP, Lyons KM, Thomson WM. New Zealand dentists' use of gingival retraction techniques for fixed prosthodontics and implants. N Z Dent J. 2010 Sep;106(3):92-6. — View Citation

de Gennaro GG, Landesman HM, Calhoun JE, Martinoff JT. A comparison of gingival inflammation related to retraction cords. J Prosthet Dent. 1982 Apr;47(4):384-6. — View Citation

Ferrari M, Cagidiaco MC, Ercoli C. Tissue management with a new gingival retraction material: a preliminary clinical report. J Prosthet Dent. 1996 Mar;75(3):242-7. — View Citation

Goldberg PV, Higginbottom FL, Wilson TG. Periodontal considerations in restorative and implant therapy. Periodontol 2000. 2001;25:100-9. Review. — View Citation

Kopac I, Cvetko E, Marion L. Gingival inflammatory response induced by chemical retraction agents in beagle dogs. Int J Prosthodont. 2002 Jan-Feb;15(1):14-9. — View Citation

Padbury A Jr, Eber R, Wang HL. Interactions between the gingiva and the margin of restorations. J Clin Periodontol. 2003 May;30(5):379-85. Review. — View Citation

Polat NT, Ozdemir AK, Turgut M. Effects of gingival retraction materials on gingival blood flow. Int J Prosthodont. 2007 Jan-Feb;20(1):57-62. — View Citation

Outcome

Type	Measure	Description	Time frame	Safety issue
Primary	Retraction methods or procedures effects on gingival health	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.	3-12 months