Cementum status in natural teeth opposing implant-borne bridgework in Macaca fascicularis.
OBJECTIVE
The objective of this study was to investigate the cementum status in natural teeth opposing implant-supported bridgework.


METHODS
Maxillary premolars and molars opposing immediate-loading (IL) and delayed-loading (DL) mandibular implant-supported bridgework in 4 Macaca fascicularis were harvested after 3 months of functional loading. Another 2 monkeys without mandibular fixed prostheses served as control. The cervical (CCW) and apical cementum width (ACW), and resorption craters (RCs) were measured.


RESULTS
No significant differences were observed between test and control groups for mean CCW (control = 26.79 ± 3.28, IL = 21.29 ± 9.12, and DL = 20.32 ± 5.65 μm) and for ACW (control = 937.97 ± 353.74, IL = 955.26 ± 720.05, and DL = 750.56 ± 517.26 μm) (P > .05). In test and control monkeys, RCs were uncommon and showed no significant differences in width (control = 0.71 ± 0.38, IL = 1.02 ± 0.49, DL = 0.85 ± 1.02 mm) and depth (control = 0.15 ± 0.07, IL = 0.25 ± 0.40, DL = 0.22 ± 0.15 mm) (P > .05).


CONCLUSIONS
Present findings suggest that implant-supported bridgework does not produce any adverse effects on the cementum of opposing natural teeth after 3 months of functional loading.
Department of Oral Pathology, Oral Medicine and Periodontology, Faculty of Dentistry, University of Malaya, Kuala Lumpur, Malaysia. siarch@um.edu.my
Chong Huat
CH
Siar
Chee Keong
CK
Pua
Chooi Gait
CG
Toh
George
G
Romanos
Kok Han
KH
Ng
D000818:Animals; D001641:Bicuspid / Q000033:anatomy & histology*; D003739:Dental Cementum / Q000033:anatomy & histology*; D019094:Dental Prosthesis, Implant-Supported / Q000009:adverse effects*; D003799:Dental Stress Analysis; D006652:Histological Techniques; D008252:Macaca fascicularis; D008297:Male; D008334:Mandible / Q000601:surgery*; D008963:Molar / Q000033:anatomy & histology*; D019237:Tooth Cervix / Q000033:anatomy & histology*