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Root surface area of the mandibular cuspid and bicuspids
John K Mowry1, Michael G Ching, Marc D Orjansen
1Department of Periodontics, School of Dentistry, University of Missouri-Kansas City, Kansas 64108, USA.
Journal of Periodontology
|November 6, 2002
Summary
This study measured the total root surface area of extracted teeth using computerized imaging. Results indicate attachment loss decreases root surface area, but not proportionally, and measuring two surfaces is accurate.
Area of Science:
- Periodontology
- Dental Anatomy
- Biomaterials
Background:
- Periodontal disease leads to attachment loss and affects tooth root surface area.
- Accurate measurement of root surface area is crucial for understanding periodontal disease progression.
Purpose of the Study:
- To determine the total root surface area of extracted mandibular teeth using computerized image analysis.
- To quantify the remaining attachment area after simulating varying degrees of bone loss due to periodontal disease.
Main Methods:
- Computerized image analysis of 150 extracted mandibular teeth to measure root surface area.
- Simulation of attachment loss in 2 mm increments to assess remaining attachment area.
- Comparison of root surface area measurements from two surfaces versus four surfaces.
Main Results:
- The total root surface area for mandibular cuspids, first bicuspids, and second bicuspids were 275.88 mm², 251.45 mm², and 271.81 mm², respectively.
- No statistically significant difference was found between measuring two root surfaces versus four surfaces for total root surface area.
- A relationship exists between increasing attachment loss and decreasing root surface area.
Conclusions:
- The total root surface area found in this study is larger than reported in previous research.
- While attachment loss reduces root surface area, the relationship is not directly proportional.
- Measuring two root surfaces is a statistically valid method for determining total root surface area.