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Cusp ridges are ridges that radiate from cusp tips. There are two marginal ridges, mesial and distal, present on all teeth. On anterior teeth, they are located on the mesial and distal borders of the lingual surface; on posterior teeth, they are located on the mesial and distal borders of the occlusal surface.
As a rule of thumb, the use of crowns and other indirect restorations for root treated teeth is justified when the surface area of the access cavity exceeds one third of the occlusal surface of the tooth, when the lingual or buccal walls are undermined or when the mesial and distal marginal ridges are missing. [4]
This article follows the 1999 classification, although the ICD-10 (10th revision of the International Statistical Classification of Diseases and Related Health Problems) differs significantly. The latest World Workshop on the Classification of Periodontal and Peri-Implant Diseases and Conditions was held in 2017. this updated classification ...
In dentistry, numerous types of classification schemes have been developed to describe the teeth and gum tissue in a way that categorizes various defects. All of these classification schemes combine to provide the periodontal diagnosis of the aforementioned tissues in their various states of health and disease.
Shovel-shaped incisors (or, more simply, shovel incisors) are incisors whose lingual surfaces are scooped as a consequence of lingual marginal ridges, crown curvature, or basal tubercles, either alone or in combination. [1] Shovel-shaped incisors are significantly common in Amerindians from North, Central, and South America.
The bulk of tooth structure on the occlusal surface at the point of contact of posterior teeth is referred to as the marginal ridge. [1] Maxillary Entities related to the maxilla, or upper jaw. [1] Mesial The direction toward the anterior midline in a dental arch, as opposed to distal, which refers to the direction toward the gingiva beyond the ...
The marginal ridges and the cingulum of the tooth are well-developed. The cingulum reaches incisally a great length and is large enough to create small fossa on either side of it. Depicted by the cementoenamel junction , the cervical line is the border between the root and crown of a tooth.
To be more specific, stippling occurs at sites of fusion of the epithelial ridges (also known as rete pegs – depression of epithelium) and correspond to the fusion of the valleys created by the connective tissue papillae (elevation of connective tissue papilla). An example of stippling could be dots found on a basketball or an orange.