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Effect of Intraoral Bandage on Surgically Induced Maxillary Growth Inhibition in Beagles

Previous studies have shown that inhibition of maxillary growth in breadth is a dependable, though variable, sequela of surgical procedures that involve mucoperiosteal denudation of palatal shelf bone adjacent to deciduous molars in weanling dogs. (O. HERFERT, Brit J Plast Surg 11:97-105, 1958; K. MORIYA, J Otorhinolaryng Soc Jap 69:1738-1749, 1966; C. R. KREMENAK, JR., W. C. HUFFMAN, and W. H. OLIN, Cleft Palate J 4:6-17, 1967; two reports in Cleft Palate J, in press; Amer J Orthodont, 53:934935, 1967; J. R. HuG& and C. R. KREMENAK, JR., Amer J Orthodont, 54:930-931, 1968.) Although these findings are thought to be exaggerations of possible similar phenomena that may occur in humans after palatal cleft repairs, they have potential implications for design and timing of surgical repair procedures for cleft deformities in children. This study was undertaken to attempt prevention of postsurgical maxillary growth inhibition by immediate application of an intraoral bandage* to a standard surgical wound. Observations of healing of similar (but untreated) wounds had suggested the hypothesis that protection of the wound in the early postsurgical hours would beneficially alter healing processes and reduce the maxillary growth inhibition observed in the earlier studies. This hypothesis seemed reasonable in view of reports of beneficial effects from use of intraoral bandage in other applications. (P. D. TOTO, J Oral Med, 21:73-74, 1966; M. D. SuMisEir, Dent Survey 44:46-50, 1968.) Six weanling beagle pups were obtained from a commercial suppliers and designated as surgical group 6. Surgery performed on the pups's 47th postnatal day (by S.E.D.) involved denudation of palatal shelf bone adjacent to right deciduous molars only. A strip of mucoperiosteum approximately 4 mm wide and 25 mm long was removed in each pup. A single piece of intraoral bandage (thickness approximately 2 mm) was cut and adapted to cover the entire hard palate in accordance with manufacturers instructions. The pups remained on a standard