Clinical Trial of Two Techniques for Gingival Displacement

Study Overview
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Brief Summary
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Regardless of the selected technique for dental impression, gingival displacement is an essential procedure specially when making impressions of subgingival finishing lines, because a moisture-free sulcus is a requirement for an effective impression. The objective of this randomized clinical study is to evaluate the efficacy of the conventional and cordless gingival displacement (GD) techniques.

Detailed Description
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On conventional technique we normally use a cord for gingival displacement. On the other hand, on cordless technique do not require this need.

Official Title
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A Double-blind Randomized Clinical Trial of Two Techniques for Gingival Displacement

Conditions
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Poor Aesthetic of Existing Restoration of Tooth

Intervention / Treatment
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* Procedure: Gingival displacement


Participation Criteria
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Eligibility Criteria
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Inclusion Criteria: good general and dental health at least two anterior teeth with an indication of prosthetic dental crown Exclusion Criteria: smoking habits systemic diseases pregnant had not consumed antibiotics or anti-inflammatory drugs in the last 60 days the selected teeth must have good periodontal health characterized by regular gingival margin with at least 2 mm of attached gingiva, non-fibrotic gingival tissue, no marginal recession, probing depth ≤ 3 mm, no evidence of significant loss of bone insertion and present no visible plaque and gingival bleeding

Ages Eligible for Study
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Minimum Age: 20 Years
Maximum Age: 60 Years

Sexes Eligible for Study
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All

Accepts Healthy Volunteers
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Accepts Healthy Volunteers

Study Plan
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How is the study designed?
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Design Details

Primary Purpose: Treatment
Allocation: Randomized
Intervention Model: Crossover Assignment
Masking: Double


Arms and Interventions

| Participant Group/Arm | Intervention/Treatment |
| --- | --- |
| Experimental: Cordless technique<br>This technique does not employ a gingival cord to obtain gingival displacement. | Procedure: Gingival displacement<br>* Gingival displacement is a dental procedure that allows exposure of the finishing line of a dental cavity in order to produce a well-adapted restoration.<br>|
| Active Comparator: Conventional technique<br>This technique employ a gingival cord to obtain gingival displacement. | Procedure: Gingival displacement<br>* Gingival displacement is a dental procedure that allows exposure of the finishing line of a dental cavity in order to produce a well-adapted restoration.<br>|

What is the study measuring?
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Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Interleukins concentration on gingival crevicular fluid |  | Before and 1 day after gilgival displacement | 

Secondary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Periodontal indices | Periodontal indices (attachment level, gingival bleeding and plaque index) were evaluated before and after gingival displacement by the both techniques. | Before, 1 day after and 10 day after gingival displacement |