Dastmalchi, R, Polson, A, Bouwsma, O, Proskin, H. Cementum Thickness and Mesial Drift. J Clin Periodontol, 17:709-13, 1990

Aim

• This study was done to determine if there was any discernible effect on cementum thickness related to mesial drift in humans. It is know that cementum increases uniformly with age, but is not known for sure if it reacts to functional stimulation due to tensional forces.
• To determine if cementum thickness is greater on the distal surface (I.E., tension side) than mesial surface.

Methods

This study utilizes specimens from 35-60 years and examines in block section the tooth and surrounding periodontium. Analysis performed on mid section of root half-way down the root from the CEJ.

Results

• Cementum was acellular at this level
• Thicker cementum was found on the distal
• Alveolar bone on the distal showed regular appointment lines and not found on the mesial. Cementum thickness was 67% thicker on distal with a range of 30 to 107%.
• Cementum thickness became greater with age in both mesial and distal
• These authors propose that the results seen with this study on cementum thickness are due to the consequences of mesial drift of the tooth.

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