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Updated: May 30, 2026
04:35
Development of an Individual-Tree Basal Area Increment Model using a Linear Mixed-Effects Approach
Published on: July 3, 2020
Complete root coverage of Miller Class III recessions
Juan Ramón Velilla Esteibar1, Luis Antonio Aguirre Zorzano, Eduardo Estefanía Cundín
1Department of Periodontology, University of Basque Country, Vizcaya, Spain. jrvelilla@yahoo.es
Summary
Complete root coverage is achievable for some Class III gingival recessions. Key predictors include intact interproximal soft tissue, graft thickness over 2mm, minimal bone loss, and narrow recession width.
Area of Science:
- Periodontology
- Dental Surgery
Background:
- Gingival recessions are classified using systems like the Miller classification (1985).
- Miller's classification predicts complete root coverage for Class I and II, but not for Class III or IV.
- Some Class III recessions achieve complete root coverage, prompting further investigation.
Purpose of the Study:
- To identify presurgical variables predicting complete root coverage in Class III gingival recessions.
- To potentially refine the Miller classification system.
Main Methods:
- A study analyzed 121 Class III gingival recessions in 50 patients.
- Presurgical, surgical, and postsurgical data were collected.
- Linear regression analysis was used to identify significant variables.
Main Results:
- 47% of studied Class III recessions achieved complete root coverage.
- Significant predictors included: intact interproximal soft tissue, graft thickness >2mm, interproximal bone loss ≤3mm, and initial recession width ≤3mm.
Conclusions:
- Complete root coverage is possible for select Class III gingival recessions.
- The identified variables may enhance the predictive accuracy of the Miller classification.
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