A Morphometric Study of The Hard Palate in Dry Adult Skulls and Its Clinical Significance
Introduction: The horizontal plates of the palatine bone, the premaxilla, and the palatine processes of the maxilla come together to form the hard palate, a crucial part of the skull. This structure is arched, with varying depth and width, being widest in the molar region. It effectively separates the oral cavity from the nasal cavity. The hard palate plays a significant role in various forensic investigations. This study highlights its clinical importance, offering valuable insights for forensic scientists and anthropologists. By conducting a detailed investigation, the research aims to improve the understanding of craniofacial anatomy and its relevance in forensic science. Future research can use the data gathered from this study as a foundational reference in fields such as anthropometrics, dentistry, forensic science, and anatomy. The primary objective of the present study was to measure the morphometric characteristics of the hard palate in dried human skulls. Materials and Methods: The present study was conducted on 50 dried skulls obtained from the Department of Anatomy, Jawahar Lal Nehru Medical College, Bhagalpur, and other medical colleges in Bihar, India. The age and sex of the skulls were not known. With the help of a digital vernier caliper, we measured the length of the hard palate, breadth of the hard palate, and height of the hard palate, palatine index (PI), and palatine height index (PHI). The obtained data was analyzed using Statistical Package for Social Sciences (SPSS, version 24.0) software. Results: The mean palatine length, breadth, and height in the present study were 46.13 ± 2.47 mm, 33.43 ± 1.92 mm, and 11.36 ± 3.45 mm, respectively. The mean values of the palatine index and palatine height index were 72.54 ± 6.56 mm and 35.14 ± 5.83 mm respectively. The most frequent type of hard palate was leptostaphyline (80%), followed by mesostaphyline (16%) according to the palatine index, while brachystaphyline type (4%) was the least commonly reported. While, the most frequent type of hard palate was orthostaphyline (60%), followed by hypsistaphyline (24%) according to the palatine height index, while the chemostaphyline type (16%) was the least commonly reported. Conclusion: This study provides valuable insights into the fields of anthropometry, dentistry, and medicine. A comprehensive understanding of the anatomy of the hard palate is crucial for various applications, including surgical procedures involving the hard and soft palate, anthropological research, the fabrication of complete maxillary dentures for edentulous patients, and the classification of crania based on ethnic and racial characteristics. Additionally, oral and maxillofacial surgeons can utilize knowledge of the palatal index to enhance surgical outcomes in the repair of cleft palate or lip deformities.