Retrospective Evaluation of Posterior Direct Restorations

Study Overview
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Brief Summary
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This retrospective study aims to evaluate the clinical performance of posterior multi-surface Class II amalgam (AM) and resin composite (RC) restorations placed by dental students over a five-year period.

Detailed Description
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Purpose: The aim of this retrospective study is to evaluate the clinical performance of posterior multi-surface Class II amalgam (AM) and resin composite (RC) restorations placed by dental students over a five-year period. Materials and Methods: A total of 119 multi-surface Class II restorations (three or more surfaces) placed by third and fourth year students will be evaluated (AM: n = 69 and RC: n = 50). Restorations were assessed clinically according to the USPHS criteria by two independent evaluators using mirrors and probes. Data will be analyzed using Chisquare, Mann-Whitney and Wilcoxon tests at a 0.05 level of significance.

Official Title
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Five-year Retrospective Clinical Evaluation of Multi-surface Amalgam and Resin Composite Restorations Placed by Dental Students

Conditions
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Dental Caries Class II

Intervention / Treatment
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* Other: Retrospective evaluation of amalgam and composite restorations


Participation Criteria
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Eligibility Criteria
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Inclusion Criteria: Presence of multi-surface (three or more surfaces) composite or amalgam restorations placed by dental students over a five-year period. Exclusion Criteria: Children Restorations performed before or after five years on the time of evaluation Restorations with fewer than 3 surfaces

Ages Eligible for Study
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Minimum Age: 25 Years
Maximum Age: 85 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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Arms and Interventions

| Participant Group/Arm | Intervention/Treatment |
| --- | --- |
| Group 1- Amalgam restorations<br>Multi-surface amalgam restorations performed by dental students and are in function for about 5 years. | Other: Retrospective evaluation of amalgam and composite restorations<br>* Multi-surface restorations that were performed by dental students and that are in function for the last five years will be clinically evaluated with mirrors and probes according to the modified USPHS criteria.<br>|
| Group 2- Composite restorations<br>Multi-surface composite restorations performed by dental students and are in function for about 5 years. | Other: Retrospective evaluation of amalgam and composite restorations<br>* Multi-surface restorations that were performed by dental students and that are in function for the last five years will be clinically evaluated with mirrors and probes according to the modified USPHS criteria.<br>|

What is the study measuring?
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Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Postoperative sensitivity | No Patient-reported sensitivity to hot and cold stimuli, sweets, clenching, and chewing related to the restoration (Alpha) | 5 years | 
| Secondary caries | No visual evidence of dark, deep discoloration adjacent to the restoration (Alpha) | 5 years | 
| Proximal contact | No open contact. Contact offers resistance to the dental floss (Alpha) | 5 years | 
| Marginal Adaptation | Restoration closely adapted to the tooth. No crevice visible (Alpha) | 5 years | 
| Fracture restoration | No evidence of fracture (Alpha) | 5 years | 
| Fracture tooth | No evidence of fracture (Alpha) | 5 years | 
| Anatomy | Restorations continuous with existing anatomic form (Alpha) | 5 years | 

 Terms related to the study
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Keywords Provided by Centre Hospitalier Valida
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Amalgam, Dental, Composite Resin