Effect of Provisional-Crown Surface Coating on Biofilm Formation

Study Overview
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Brief Summary
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Auto polymerizing poly methyl methacrylate (PMMA), and light initiated resin modified PMMAs, are commonly used for fabricating provisional restorations (PRs) during prosthetic treatment 1. Biofilm accumulated on these PRs may cause caries and inflammation of the surrounding tissue, tempering the outcome of the final restoration 2. Plaque adherence to temporary restorations was significantly increased compared with the untreated reference teeth 3. Biologic and physical properties of the various materials used as PRs were studied extensively 4-8 whereas their interaction with bacterial biofilm in vivo and ex vivo is less characterized. One improvement in provisional restorative materials is the use of liquid polish. It is claimed that these materials gives a high luster finish to provisional bis-acryl restorations and processed acrylic appliances, reduces or eliminates costly and time consuming polishing steps and can be used on all types of direct and indirect restorations and appliances.The effect of liquid polish coating or resin bonding coating on biofilm formation on PRs was not reported.

Detailed Description
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Auto polymerizing poly methyl methacrylate (PMMA), and light initiated resin modified PMMAs, are commonly used for fabricating provisional restorations (PRs) during prosthetic treatment 1. Biofilm accumulated on these PRs may cause caries and inflammation of the surrounding tissue, tempering the outcome of the final restoration 2. Plaque adherence to temporary restorations was significantly increased compared with the untreated reference teeth 3. Biologic and physical properties of the various materials used as PRs were studied extensively 4-8 whereas their interaction with bacterial biofilm in vivo and ex vivo is less characterized. One improvement in provisional restorative materials is the use of liquid polish. It is claimed that these materials gives a high luster finish to provisional bis-acryl restorations and processed acrylic appliances, reduces or eliminates costly and time consuming polishing steps and can be used on all types of direct and indirect restorations and appliances. The effect of liquid polish coating or resin bonding coating on biofilm formation on PRs was not reported. In this study we intend to measure, in vivo early biofilm formation on PMMA PRs with and without resin coatings.

Official Title
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Effect of Provisional-Crown Surface Coating on Biofilm Formation

Conditions
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Dental Plaque

Intervention / Treatment
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* Procedure: coating a dental restoration material ,polymethylmethacrylate, with liquid polish resin


Participation Criteria
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Eligibility Criteria
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Inclusion Criteria: Patient in need for PMAA provisional crowns Exclusion Criteria: Patient took antibiotics three months prior to experiment

Ages Eligible for Study
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Minimum Age: 18 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: Prevention
Allocation: Non-Randomized
Intervention Model: Single Group Assignment
Masking: None (Open Label)


Arms and Interventions

| Intervention/Treatment |
| --- |
|Procedure: coating a dental restoration material ,polymethylmethacrylate, with liquid polish resin|nan|

What is the study measuring?
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Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| surface coating with reduced biofilm formation demonstrated by confocal scanning laser microscope and scanning electron microscope |  |  | 

 Terms related to the study
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Keywords Provided by Centre Hospitalier Valida
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biofilm, adhesion, liquid polish, bonding resin, PMMA Polymethylmetacrylate, provisional crown, no antibiotics treatment three months prior to experiment, no mouth rinse with oral solutions one month prior to experiment