Clinical Assessement of Glazed Versus Polished Lithium Disilicate Crowns in Surface Roughness and Enamel Antagonists Wear

Patient Satisfaction and Clinical Assessment of Surface Roughness and Wear of Enamel Antagonists for Polished Versus Glazed Posterior Lithium Disilicate Glass Ceramic Crowns

It is believed that final glazing yields the most acceptable ceramic surfaces in terms of smoothness. However, since reglazing must be performed in a dental laboratory with the use of a thermal furnace, it requires multiple office visits. Repeated firings have a destructive effect on ceramic surfaces and can cause deformation. Conversely, polishing is easy and simple and can be accomplished in a single session.

Study Overview

• Status: Unknown
• Conditions: Tooth Decay
• Intervention / Treatment: Other: polished emax Press

• Study Type: Interventional
• Enrollment (Anticipated): 28
• Phase: Not Applicable

Contacts and Locations

• Study Contact: Name: Mervat Rouchdy, M.D.s; Phone Number: 01272625020; Email: mervatmourad82@gmail.com
• Study Contact Backup: Name: Lamia Khair Allah

Participation Criteria

Eligibility Criteria

• Ages Eligible for Study: 18 years to 50 years (Adult)
• Accepts Healthy Volunteers: No
• Genders Eligible for Study: All

Description

Inclusion Criteria:

• Patients from 18-50 years old who are able to read and sign the informed consent document.
• Physically and psychologically able to tolerate conventional restorative procedures.
• Have no active periodontal or pulpal diseases, have teeth with good restorations.
• Patients have no temporomandibular disorders.
• Each participant needed a crown on either a first or second premolar or first or second molar in any arch.
• Teeth selected shoud include:

restorability with a crown:root ratio of at least 1:1. presence of an opposing natural tooth which was non-restored or minimally restored.

the presence of two non-restored or minimally restored teeth opposing each other on the same quadrants as the crowned tooth and the opposing to serve as enamel controls. Minimally restored was defined as teeth which have no restoration greater than a Class II amalgam restoration.

- Willing to return for follow-up examinations and evaluation.

Exclusion criteria

• Patients in the growth stage with partially erupted teeth.
• Patients with poor oral hygiene and motivation.
• Pregnant women.
• Psychiatric problems or unrealistic expectations.
• Lack of opposite occluding dentition in the area intended for restoration.
• Patients with temporomandibular disorders.

Study Plan

How is the study designed?

Design Details

• Primary Purpose: Treatment
• Allocation: Randomized
• Interventional Model: Parallel Assignment
• Masking: Double

Number of Arms

2

Arms and Interventions

Participant Group / Arm	Intervention / Treatment
Active Comparator: glazed emax Press	Other: polished emax Press; lithium disilicate glass ceramic crowns subjected to polishing only; Other Names: emaxPressable ceramics
Experimental: Polished emax Press	Other: polished emax Press; lithium disilicate glass ceramic crowns subjected to polishing only; Other Names: emaxPressable ceramics

What is the study measuring?

Primary Outcome Measures

Outcome Measure	Measure Description	Time Frame
Antagonists enamel wear using profilometer	wear of enamel antagonists opposing to emaxPress crowns that will be measured in um	1 year

Secondary Outcome Measures

Outcome Measure	Measure Description	Time Frame
Restoration surface Roughness using profilometer	restoration roughness after different finishing methods that will me measured in um	1 year
Patient satisfaction	Questionnaire	1 year

Collaborators and Investigators

• Sponsor: Cairo University

Study record dates

Study Major Dates

• Study Start (Anticipated): November 1, 2018
• Primary Completion (Anticipated): November 1, 2019
• Study Completion (Anticipated): January 1, 2020

Study Registration Dates

• First Submitted: October 2, 2018
• First Submitted That Met QC Criteria: October 3, 2018
• First Posted (Actual): October 5, 2018

Study Record Updates

• Last Update Posted (Actual): October 5, 2018
• Last Update Submitted That Met QC Criteria: October 3, 2018
• Last Verified: October 1, 2018

More Information

Terms related to this study

• Additional Relevant MeSH Terms: Stomatognathic Diseases; Tooth Demineralization; Tooth Diseases; Dental Caries
• Other Study ID Numbers: CEBD-CU-2018-09-34

Drug and device information, study documents

• Studies a U.S. FDA-regulated drug product: No
• Studies a U.S. FDA-regulated device product: No