Comparison in Marginal Adaptation Between Conventional and Gull Wing Preparation in Laminates Veneers

Marginal Adaptation of E.Max Laminate Veneers Prepared With Modified Gull Wing Preparation and Conventional Preparation

The aim of this study is to evaluate tooth sensitivity and marginal adaptation of porcelain laminates veneers prepared with modified gull wing preparation and conventional preparation.

Study Overview

• Status: Unknown
• Conditions: Teeth Sensitivity
• Intervention / Treatment: Procedure: gull wing preparation of laminates veneers; Procedure: conventional preparation of laminates veneers

Detailed Description

Visit 1: Preoperative records, face-to-face adherence reminder session, clinical, radio-graphic examination and primary impression for diagnostic cast construction.

Visit 2: Teeth preparation, secondary impression,temporary restoration and teeth sensitivity evaluation using United States Public Health Service criteria.

Visit 3: Placement and permanent cementation of the final restoration

Visit 4: marginal adaptation measurement by electron microscope using impression replica.

• Study Type: Interventional
• Enrollment (Anticipated): 38
• Phase: Not Applicable

Contacts and Locations

• Study Contact: Name: housham N Musa, master; Phone Number: 00201068778033; Email: dr_hishamnabeel@hotmail.com
• Study Contact Backup: Name: rayan R dahab, master; Phone Number: 00201068775688; Email: rayanrabiedahab@gmail.com

Participation Criteria

Eligibility Criteria

• Ages Eligible for Study: 18 years to 40 years (Adult)
• Accepts Healthy Volunteers: No
• Genders Eligible for Study: All

Description

Inclusion Criteria:

• From 18-40 years old, be able to read and sign the informed consent document.
• Be physically and psychologically able to tolerate conventional restorative Procedures.
• Have no active periodontal or pulpal diseases, have teeth with good restorations.
• Patients with teeth problems indicated for laminate veneer (e.g:discoloration, fracture not involve more than 50% enamel loss, mild malposition.
• Be willing to return for follow-up examinations and evaluation.

Exclusion Criteria:

• Patients in the growth stage with partially erupted teeth.
• Patient with fractured teeth of more than 50% enamel loss.
• Patients with poor oral hygiene and motivation.
• Pregnant women.
• Patient with post and core endodontically treated teeth.
• Psychiatric problems or unrealistic expectations.
• Lack of opposite occluding dentition in the area intended for restoration

Study Plan

How is the study designed?

Design Details

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

Number of Arms

2

Arms and Interventions

Participant Group / Arm	Intervention / Treatment
Active Comparator: gull wing preparation veneers; intervention: gull wing preparation in laminates veneers proximal margin of the preparation is placed toward the lingual .The area of the proximal margin between the contact area and the gingival papilla is placed even further to the lingual. This preparation design helps to hide the margin when the restorations are viewed from an angle.	Procedure: gull wing preparation of laminates veneers; preparation involving mesial and distal extension further lingualy.; Other Names: dog leg preparation of laminates veneers
Active Comparator: conventional preparation veneers; intervention: conventional preparation in laminates veneers preparation of veneers without lingual extension of preparation in mesial and distal areas	Procedure: conventional preparation of laminates veneers; preparation not involving mesial and distal extension further lingualy.

What is the study measuring?

Primary Outcome Measures

Outcome Measure	Measure Description	Time Frame
measuring marginal adaptation of laminates veneers using stero-microscope	marginal adaptation of laminates veneers will be assess as follows, before laminates cementation, an impression material will be placed in the fitting surface of the veneers and placed over the reduced tooth using finger pressure, after material set the impression replica is separated from the laminates and the replica is section and measures under stero-microscope for marginal adaptation, measurement will be performed in eight different points on the buccal and mesio-distal sections, measurement will be in micrometer.	immediately before laminates delivery up to 4 week sfter tooth preparation

Secondary Outcome Measures

Outcome Measure	Measure Description	Time Frame
measuring tooth sensitivity after tooth preparation for laminates veneers	measurment will be acording tomodified United States Public Health Service (USPHS) criteria used for the clinical evaluations of the restorations. post-operative sensitivity 0 No symptoms; Slight sensitivity; Moderate sensitivity; Severe pain	one week after tooth preparation

Collaborators and Investigators

• Sponsor: Cairo University

Study record dates

Study Major Dates

• Study Start (Anticipated): July 13, 2018
• Primary Completion (Anticipated): October 1, 2018
• Study Completion (Anticipated): October 1, 2018

Study Registration Dates

• First Submitted: July 3, 2017
• First Submitted That Met QC Criteria: July 9, 2017
• First Posted (Actual): July 11, 2017

Study Record Updates

• Last Update Posted (Actual): July 11, 2017
• Last Update Submitted That Met QC Criteria: July 9, 2017
• Last Verified: July 1, 2017

More Information

Terms related to this study

• Additional Relevant MeSH Terms: Stomatognathic Diseases; Tooth Diseases; Dentin Sensitivity
• Other Study ID Numbers: CairoUni

Plan for Individual participant data (IPD)

• Plan to Share Individual Participant Data (IPD)?: Undecided

Drug and device information, study documents

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