Normal human dental roots and with cementum pearls. Structural histological comparison.

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Alicia Kohli; Stella M. Pezzotto & Leonor Poletto


During tooth life in mouth cellular cement settles in the apex in order to compensate the occlusal wear considered normal. After a tooth extraction, on rare occasions it is possible to visualize cement excesses with pearls form well delimited and hard to tact, located in another radicular sector different of the apex. Our aim was to compare structures in both types of cement in order to find histological differences. Consequently, 20 permanent teeth with pearls (G1) and 20 with normal roots (G2) were used. G1 roots were cut by a thin grain metallic disc at low speed in transverse sense, at the height of the protuberance most prominent part; G2 roots were marked in thirds and cut in transverse sense at the half of the third apical. From both groups a segment was obtained to be reserved and other one that was prepared by erosion technology to be visualized by MO at minor and major increases. Results were compared with student t test, categorical variables with Fisher's tests significance 5%. Forty adult patients teeth were obtained, male 42.5 % and female 57.5 %, age average in G1 61±16 and 55±18 in G2 (p=0.289). Pearls exterior face was smooth, with a preserved perimeter, Tomes granular zone was visible as were lagoons, which were less abundant, greater in size and with uneven distribution arriving at tissue border in a lesser proportion compared with normal cement.

KEY WORDS: Dental cementum; Hypercementosis; Cementum pearls.

How to cite this article

KOHLI, A.; PEZZOTTO, S. M. & POLETTO, L. Normal human dental roots and with cementum pearls. Structural histological comparison. Int. J. Morphol., 31(3):1020-1025, 2013.