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

Cairo University (CU)

Status: Unknown

Conditions: Teeth Sensitivity

Treatments: Procedure: conventional preparation of laminates veneers; Procedure: gull wing preparation of laminates veneers

Study type: Interventional

Funder types: Other

Identifiers

NCT03214549

CairoUni

Details and patient eligibility

About

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.

Full 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.

Enrollment: 38 estimated patients

Sex: All

Ages: 18 to 40 years old

Volunteers: Accepts Healthy Volunteers

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

Trial design

Primary purpose: Treatment

Allocation: Randomized

Interventional model: Parallel Assignment

Masking: Single Blind

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38 participants in 2 patient groups

gull wing preparation veneers

Active Comparator group

Description:

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.

Treatment:

Procedure: gull wing preparation of laminates veneers

conventional preparation veneers

Active Comparator group

Description:

intervention: conventional preparation in laminates veneers preparation of veneers without lingual extension of preparation in mesial and distal areas

Treatment:

Procedure: conventional preparation of laminates veneers