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The deciduous maxillary second molar is the most likely deciduous tooth to have an oblique ridge. In the universal system of notation, the deciduous maxillary second molars are designated by a letter written in uppercase. The right deciduous maxillary second molar is known as "A", and the left one is known as "J".
A functional occlusal bevel should be created on the occlusal loading cusp of molar teeth by holding the bur at a 45 o angle to the occlusal surface. This is the buccal cusp for mandibular teeth and the palatal cusp for maxillary teeth.
This is true only in permanent teeth. In deciduous teeth, the maxillary second molar is the last tooth in the mouth and does not have a third molar behind it. The deciduous maxillary second molar is also the most likely of the deciduous teeth to have an oblique ridge. There are usually four cusps on maxillary molars, two buccal and two palatal.
Canine teeth, otherwise known as cuspids, each possess a single cusp, while premolars, otherwise known as bicuspids, possess two each. Molars normally possess either four or five cusps. In certain populations the maxillary molars, especially first molars, will possess a fifth cusp situated on the mesiolingual cusp known as the Cusp of Carabelli.
The malocclusion classification is based on the relationship of the mesiobuccal cusp of the maxillary first molar and the buccal groove of the mandibular first molar. If this molar relationship exists, then the teeth can align into normal occlusion. According to Angle, malocclusion is any deviation of the occlusion from the ideal. [4]
In this bilateral balanced occlusal scheme, the posterior teeth are set up at different angles in the coronal plane; 5° for the first premolar teeth, 10° for second premolar teeth, and 15° angle for both the first and second molar teeth.
If the cusp of Carabelli is present, the tooth associated are often larger mesiodistally and it is not uncommon that a DE involved tooth has an abnormal root pattern. [4] There are 4 different ways to classify/ categorize DE involved teeth. Schulge (1987) classification, teeth falls into 5 categories according to the location of the tubercles ...
There may be a deep groove between the talon cusp and the rest of the tooth. The extra cusp typically contains pulp tissue. [5] When viewing talon cusp from the occlusal, the projection will appear "x-shaped", as well as appears conical, and mimic the shape of an eagle's talon. [2] Symptoms of talon cusp include: Interference with occlusion [2 ...