Retrospective Evaluation of RMGI/GI Class V Restorations

Study Overview
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Brief Summary
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Brief Summary: Retrospective study to evaluate the clinical performance of two restorative materials - glass-ionomer (GI) and resin-modified glass-ionomer (RMGI) materials - in Class V carious and non-carious cervical lesions restored by dental students.

Detailed Description
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The aim of this retrospective study was to evaluate the clinical performance of glass-ionomer (GI) and resin-modified glass-ionomer (RMGI) materials in Class V carious and non-carious cervical lesions restored by dental students. Ninety-six (96) restorations performed with either GI (Fuji IX) (n=39) or RMGI (Fuji II) (n=57) were evaluated using the modified USPHS (United States Public Health Systems) criteria by two independent investigators at two follow-up evaluations (two years apart). The Fisher statistical test was used to compare USPHS criteria and examine significant differences by setting p<0.05 for statistical significance and the Kaplan-Meier algorithm was used to calculate the survival probability.

Official Title
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Retrospective Clinical Evaluation of RMGI/GI Class V Restorations Placed by Dental Students

Conditions
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Material, Dental

Intervention / Treatment
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* Other: Retrospective evaluation of RMGI and GIC Class V Restorations


Participation Criteria
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Eligibility Criteria
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Inclusion Criteria: • Class V Ionomer restorations (RMGI and GIC) placed by 3rd and 4th dental students over the last three years. Exclusion Criteria: Class V Restorations placed outside of the dental school Class V Restorations that used other restorative materials Class V Ionomer restorations (RMGI and GIC0 placed before three years on the time of evaluation.

Ages Eligible for Study
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Minimum Age: 18 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 |
| --- | --- |
| Class V RMGI Restorations<br>Resin-modified glass ionomer (RMGI - Fuji 2 LC) Class V restorations performed by by 3rd and 4th-year dental students in adult patients of Schulich dental clinic over the last three years will be evaluated using mirrors and probes. | Other: Retrospective evaluation of RMGI and GIC Class V Restorations<br>* Retrospective evaluation of RMGI and GIC Class V Restorations that were placed by dental students over the last three years were evaluated using the modified USPHS criteria using mirrors and probes.<br>|
| Class V Glass ionomer - GIC Restorations<br>Glass ionomer (GI - Fuji 9) Class V restorations performed by by 3rd and 4th-year dental students in adult patients of Schulich dental clinic over the last three years will be evaluated using mirrors and probes. | Other: Retrospective evaluation of RMGI and GIC Class V Restorations<br>* Retrospective evaluation of RMGI and GIC Class V Restorations that were placed by dental students over the last three years were evaluated using the modified USPHS criteria using mirrors and probes.<br>|

What is the study measuring?
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Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Post-Operative Sensitivity | Absence of sensitivity to pressure, cold or hot temperature on the teeth restored (checked verbally by inquiring the patient about the presence or absence of pain in the presence of stimuli) | 2 years | 
| Secondary Caries | No visual evidence of dark, deep discolouration or cavitation adjacent to the restoration (visually and manually checked with the tip of a dental hand instrument - explorer) | 2 years | 
| Anatomic Form | Restoration's anatomy is continuous with existing anatomic form of remaining tooth structure (checked visually with a dental intra-oral mirror) | 2 years | 
| Color match | No difference between the tooth and restoration colour (checked visually with a dental intra-oral mirror) | 2 years | 
| Surface Roughness | Surface texture of the restoration is similar to tooth structure (manually checked with the tip of a dental hand instrument - explorer) | 2 years | 
| Marginal Discolouration | No visual evidence of dark discolouration adjacent to the margins of the restoration (checked visually with a dental intra-oral mirror) | 2 years | 
| Marginal Integrity | Restoration closely adapted to the tooth. No crevice visible (manually checked with the tip of a dental hand instrument - explorer) | 2 years | 

 Terms related to the study
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Keywords Provided by Centre Hospitalier Valida
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Glass-Ionomer Cement, Polyacid-Modified Composite Resin, Dental School