title: Clinical morphology of the mesial fossa of the maxillary first permanent molar in relation to operative dentistry.
abstract: The purpose of this in vivo study was to identify a previously unreported occlusal enamel ridges in the mesial fossa of the maxillary first permanent molars by using caries detector dye. Seventy two maxillary right and left first permanent molars of thirty-six patients were examined in this study. Horizontal linear measurements in millimeters, location, and shape of the occlusal ridge in the mesial fossa were examined clinically and were compared to the transverse ridge in a percentage form. Five occlusal enamel ridges with different locations, and pathways were detected in addition to the transverse ridge, two major ridges (> 33.33% of the transverse ridge) and three minor ridges (< 33.33%) of the transverse ridge). There were symmetrical patterns of the ridges between right and left maxillary first permanent molars (80.5%).
authors.affiliation: Department of Pediatric Dentistry, Tufts University School of Dental Medicine, Boston, MA 02111, USA.
authors.forename: F
authors.initials: F
authors.lastname: al-Sehaibany
authors.forename: G
authors.initials: G
authors.lastname: White
authors.forename: J T
authors.initials: JT
authors.lastname: Rainey
mesh_terms: D000075202:Contraindications; D003737:Dental Cavity Preparation / Q000379:methods; D003743:Dental Enamel / Q000033:anatomy & histology; D006801:Humans; D008437:Maxilla; D008963:Molar / Q000033:anatomy & histology* / Q000293:injuries; D019228:Tooth Crown / Q000033:anatomy & histology* / Q000293:injuries; D014082:Tooth Fractures / Q000517:prevention & control*