Orthodontic movement after periodontal regeneration of class II furcation: a pilot study in dogs.
OBJECTIVE
The effect of orthodontic movement on the periodontal tissues of maxillary second pre-molars, after regenerative treatment for class II furcations, was evaluated in four mongrel dogs.


METHODS
Class II furcation lesions were created. After 75 days they were treated with bovine bone mineral matrix and guided tissue regeneration with absorbable membrane. After 2 months of daily plaque control, each of the dog's furcation pre-molars was randomly assigned to a test or control group. Orthodontic appliances were placed on both sides of the maxilla using third pre-molars and canines as anchorages. In the test group, bodily orthodontic movement of the second pre-molars was performed in the mesial direction for 3 months while control pre-molars remained unmoved. The dogs were sacrificed for histometric and histologic analyses.


RESULTS
There were no statistically significant differences between the two groups in total bone and biomaterial areas or linear extension of periodontal regeneration on the radicular surfaces. In the test group, however, there was a tendency to a greater quantity of bone and a lesser quantity of biomaterial.


CONCLUSIONS
The orthodontic movement was not pre-judicial to the results obtained with the regenerative periodontal treatment.
da Silva
Vanessa Camila
VC
Department of Periodontology, School of Dentistry at Araraquara, State University of São Paulo - UNESP, Araraquara, SP, Brazil.
Cirelli
Carolina Chan
CC
Ribeiro
Fernando Salimon
FS
Costa
Maurício Ribeiro
MR
Comelli Lia
Raphael Carlos
RC
Cirelli
Joni Augusto
JA