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International Journal of Morphology

On-line version ISSN 0717-9502


ILAYPERUMA, Isurani; NANAYAKKARA, Ganananda  and  PALAHEPITIYA, Nadeeka. Morphometric Evaluation of the Greater Palatine Foramen in Adult Sri Lankan Skulls. Int. J. Morphol. [online]. 2014, vol.32, n.4, pp.1418-1422. ISSN 0717-9502.

Evidence supports a clear racial variation in the position of the greater palatine foramen. Therefore detailed knowledge of the population specific data on biometric features of the greater palatine foramen will facilitate therapeutic, local anesthetic and surgical manipulations in the maxillo-facial region. The goal of this study was to elucidate the morphological features and precise anatomical position of the greater palatine foramen with reference to surrounding anatomical landmarks in an adult Sri Lankan population. A total of one hundred and thirty six adult dry skulls were assessed to determine the number, shape, direction of opening of the greater palatine foramen and straight distance from it to the palatine midline, posterior margin of the hard palate and incisive fossa. The position of the greater palatine foramen was determined in relation to the maxillary molars. The results indicated that 82.35% of the greater palatine foramina had an oval outline and located in line with the long axis of the upper third molar (77.20%). The greater palatine foramen was located 15.24 mm lateral to the median sagittal plane of the hard palate and 4.51 mm anterior to the posterior border of the hard palate. In 50% of the cases the greater palatine foramen opened in an antero-medial direction. The results of the current study further highlight the racial differences in the position of the greater palatine foramen and emphasize the need for meticulous preoperative evaluation of the greater palatine foramen in patients who are candidates for maxillo-facial surgeries and regional block anesthesia.

Keywords : Greater palatine foramen; Morphometry; Sri Lanka.

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