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Cleft Palate Craniofac J. 1992 Jul;29(4):369-75.

Mandibular morphology and spatial position in patients with clefts: intrinsic or iatrogenic?

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Hospital de Pesquisa e Reabilitação de Lesões Lãbio-Palatais, Universidade de São Paulo, Brazil.


Lateral cephalometric films of operated (Op) and non-operated (Nop) patients with cleft lip and alveolus, cleft lip and palate or cleft palate only, were compared to determine whether the shape or position of the mandible is affected by lip and/or palate surgery. The sample included 204 adult cleft patients, Caucasians of both sexes with one of the following three cleft types: complete unilateral lip and alveolus (n = 50), complete unilateral lip and palate (n = 68), and isolated palate (n = 86). The comparison involved 113 cleft patients operated at the conventional timing and 91 cleft patients who had received no surgical or orthodontic treatment. Comparison was done in order to ascertain if the surgery performed had had any influence upon mandibular growth. The results indicated that, in all three cleft types, the surgery did not induce significant changes in the mandibular growth.

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