Influences of Gingival Cord Retractor in Retention Rate of Non-carious Cervical Lesions Restorations.
Study Details
Study Description
Brief Summary
The aim of this study is through a randomized clinical trial, double blind, splith-mouth, evaluate the retention rate of restorative protocols of Non-carious cervical lesion. The presence of gingival displacement with a retraction cord (yes or no) and the category of adhesive system (etch-and-rise and self-etching) will be evaluated. Data will be collected, tabulated and submitted to statistical analysis.
| Condition or Disease | Intervention/Treatment | Phase |
|---|---|---|
|
N/A |
Detailed Description
Cervical wear is classified as a noncarious cervical lesion (NCCL), which is a pathological process characterized by loss of dental hard tissues near the cementoenamel junction (CEJ). The aim of this study is through a randomized clinical trial, double blind, splith-mouth, evaluate the retention rate of restorative protocols of Non-carious cervical lesion. The presence of gingival displacement with a retraction cord and the category of adhesive system will be evaluated. Two hundred and twenty teeth, with NCCL of depth greater than 1.5mm, of 55 healthy patients of both sexes will be select. The teeth will be randomly divided into 4 different groups according to the gingival displacement with retraction cord (yes or no) and adhesive system category (etch-and-rise and self-etching). Data will be collected, tabulated and submitted to statistical analysis.
Study Design
Arms and Interventions
| Arm | Intervention/Treatment |
|---|---|
| Active Comparator: Retraction and total-etch Gingival displacement with a gingival cord (#0, #00 or #000) prior to the restoration. Application of total-etch adhesive system: enamel and dentin etched with 35% phosphoric acid, wash, dry, two layers of primer/bond application with a brush and photoactivated for 20 seconds. |
Procedure: Gingival displacement
Gingival displacement with a gingival cord (#0, #00 or #000) with specific spatula.
Procedure: Enamel and dentin etched
Enamel and dentin etched with 35% phosphoric acid for 30 and 15 seconds, respectively.
Procedure: Wash and dry
Wash and dry with absorbent paper.
Device: Total-etch adhesive system
Two layers of pirmer/bond on enamel and dentin with a brush.
Procedure: Photoactivated
Photoactivated for 20 seconds
|
| Active Comparator: No retraction and total-etch Application of total-etch adhesive system: enamel and dentin etched with 35% phosphoric acid, wash, dry, two layers of primer/bond application with a brush and photoactivated for 20 seconds. |
Procedure: Enamel and dentin etched
Enamel and dentin etched with 35% phosphoric acid for 30 and 15 seconds, respectively.
Procedure: Wash and dry
Wash and dry with absorbent paper.
Device: Total-etch adhesive system
Two layers of pirmer/bond on enamel and dentin with a brush.
Procedure: Photoactivated
Photoactivated for 20 seconds
|
| Active Comparator: Retraction and self-conditioning Gingival displacement with a gingival cord (#0, #00 or #000) prior to the restoration. Application of self-conditioning adhesive system: selective enamel etched with 35% phosphoric acid, wash, dry, one layer of acid/pirmer on enamel and dentin with a brush, one layer of bond with a brush and photoactivated for 20 seconds. |
Procedure: Gingival displacement
Gingival displacement with a gingival cord (#0, #00 or #000) with specific spatula.
Procedure: Selective enamel etched
Selective enamel etched with 35% phosphoric acid for 15 seconds.
Procedure: Wash and dry
Wash and dry with absorbent paper.
Device: self-conditioning adhesive system
One layer of acid/pirmer on enamel and dentin with a brush following to one layer of bond with a brush.
Procedure: Photoactivated
Photoactivated for 20 seconds
|
| Active Comparator: No retraction and self-conditioning Application of self-conditioning adhesive system: selective enamel etched with 35% phosphoric acid, wash, dry, one layer of acid/pirmer on enamel and dentin with a brush, one layer of bond with a brush and photoactivated for 20 seconds. |
Procedure: Selective enamel etched
Selective enamel etched with 35% phosphoric acid for 15 seconds.
Procedure: Wash and dry
Wash and dry with absorbent paper.
Device: self-conditioning adhesive system
One layer of acid/pirmer on enamel and dentin with a brush following to one layer of bond with a brush.
Procedure: Photoactivated
Photoactivated for 20 seconds
|
Outcome Measures
Primary Outcome Measures
- Success rate of noncarious cervical lesions restorations according to the World Dental Federation criterion [36 mounths]
Evaluate the success rate of NCCL restoration with a 36 mounths follow up
Eligibility Criteria
Criteria
Inclusion Criteria:
- Healthy volunteers; both genres; presence of at least four non carious cervical lesions of similar dimensions in the same arc and opposite quadrants; good oral hygiene.
Exclusion Criteria:
- Presence of cavities, cracks or enamel fractures; extensive or unsatisfactory restorations; recent restorations involving the labial surface; dentures or orthodontics; presence of periodontal disease and,or parafunctional habits; systemic disease and, or severe psychological; constant use of analgesic and, or anti-inflammatory or allergic response to dental products.
Contacts and Locations
Locations
| Site | City | State | Country | Postal Code | |
|---|---|---|---|---|---|
| 1 | Federal University of Uberlandia | Uberlandia | Minas Gerais | Brazil | 381440617 |
Sponsors and Collaborators
- Federal University of Uberlandia
Investigators
None specified.Study Documents (Full-Text)
None provided.More Information
Publications
None provided.- CAAE - 57032016.0.0000.5152