The mesial and the distal margins are marked from the lingual aspect. Minute differences in different aspects of dental anatomy can be observed in maxillary lateral incisors. The crown conforms to a triangular outline reflected by the outline of the root cross section. The crown of the maxillary central appears to be bulkier from the incisal aspect. The curvature of the cervical line is less in extent from the distal aspect in comparison with the mesial aspect. The distal and mesial outline cannot be distinguished well in maxillary central incisors. The apex of the root is bluntly round shaped. The root of the maxillary central incisor is cone-shaped. The crown is wedge-shaped or triangular in shape. The extent of the curvature depends mostly on the typal form of the tooth. The mesial outline of the crown is convex whereas the distal outline is more convex. The average length of the crown will be 10 -11mm from the highest (cervical line) to the lowest point (incisal edge). The anatomy and physiology of the maxillary central can be explained in different aspects as follows 1. The main function of maxillary central incisors is to cut the food during mastication of mechanical digestion to form the food bolus. Maxillary central incisors are situated in the center of the maxilla, and two central incisors are situated on either side of the mid line. Side by Side Comparison – Maxillary Central vs Lateral Incisor in Tabular Form Similarities Between Maxillary Central and Lateral Incisorĥ. Maxillary central incisors erupt first whereas maxillary lateral incisors erupt later. The key difference apart from the various structural differences shown by maxillary central and lateral incisors is their time of erupting. Maxillary lateral incisors are situated laterally in the upper jaw and they emerge at the age of eight to nine. Maxillary central incisors are central incisors that erupt during the age of seven to eight. They are characterized based on several aspects: labial aspect, mesial aspect, distal aspect and incisal aspect. Incisors are further divided into the maxillary central incisors and maxillary lateral incisors depending on their shape and structure. The maxillary teeth are the teeth present in the upper jaw that are comprised of four types: Incisors, Canines, Premolars, and Molars. As we say every tooth is not the same it holds same for the access cavity preparations as well.Key Difference – Maxillary Central vs Lateral Incisorĭental anatomy and physiology have been studied over the years to elucidate the structure and functions of different types of teeth, especially in humans. So it might be different in every tooth and you have to be ready to make the necessary changes according to your case. There will be many changes in the location of the access openings and this image shows us the relative position of the access openings taken by studying hundreds of canal positions. This can be done by properly reading the X-ray to make sure that there are no additional root canals or Roots and the locations of which should be kept in mind to expose them during access cavity preparation. Maxillary 2nd Molar: Access cavity is Rhomboid with acute Mesio-buccal angle, obtuse distobuccal angle and palatal right anglesĭuring Access cavity preparations care must be taken not to perforate and make sure that there are no canals missed.Maxillary 1st Molar: Access cavity is Rhomboid with acute Mesio-buccal angle, obtuse distobuccal angle and palatal right angles.Maxillary 2nd Premolar: Access cavity is Oval in shape.
Maxillary 1st Premolar: Access cavity is Oval in shape.Maxillary Canine: Access cavity is Oval in shape with greatest diameter Labiopalatally.Maxillary Lateral incisor: Access cavity is Rounded Triangular shape access cavity with base towards the Incisal edge.Maxillary Central Incisor: Access cavity is Rounded Triangular shape access cavity with base towards the Incisal edge.
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