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A Comparative Evaluation for Biologic Width following Surgical Crown Lengthening Using Gingivectomy and Ostectomy
Kiran Kumar Ganji1, Veena Ashok Patil, Jiji John
1Department of Periodontics, College of Dental Sciences & Hospital, Rau. Devi Ahilya University, Indore, Madhya Pradesh, India.
International Journal of Dentistry
|September 13, 2012
Summary
Surgical crown lengthening procedures, including ostectomy with an apically positioned flap, effectively re-establish biologic width in periodontal tissues within three months. Ostectomy proved more effective than gingivectomy for this purpose.
Area of Science:
- Periodontology
- Restorative Dentistry
- Surgical Procedures
Background:
- Surgical crown lengthening aids restorative dentistry and prevents tooth injury.
- Animal studies show crestal resorption re-establishes biologic width, but human data is limited.
Purpose of the Study:
- To evaluate periodontal tissue changes, specifically biologic width, after surgical crown lengthening in humans.
- Compare two surgical techniques: gingivectomy and ostectomy with an apically positioned flap.
Main Methods:
- Twenty patients undergoing surgical crown lengthening were assessed.
- Measured Plaque Index (PI), Gingival Index (GI), Position of Gingival Margin (PGM), Probing Depth (PD), and Biologic Width (BW).
- Utilized a Student's t-test for statistical analysis.
Main Results:
- Initial biologic width averaged 2.55mm (Gingivectomy) and 1.95mm (Ostectomy).
- Post-procedure, biologic width reduced to 1.15mm (Gingivectomy) and 1.25mm (Ostectomy).
- Biologic width was re-established to its original dimension within 3 months.
Conclusions:
- Surgical crown lengthening successfully re-establishes biologic width in human periodontal tissues.
- Ostectomy with an apically positioned flap is a more effective surgical crown lengthening procedure than gingivectomy.