marginal ridge


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Related to marginal ridge: Oblique ridge, triangular ridge, transverse ridge

mar·gi·nal ridge

[TA]
the rounded borders that form the mesial and distal margins of the occlusal surface of a tooth.

marginal ridge

an elevation of enamel that forms the proximal boundary of the occlusal surface of a tooth.

mar·gi·nal ridge

(mahr'ji-năl rij) [TA]
1. An elevation of enamel that forms the proximal boundaries of the occlusal surface of premolars and molars.
2. An elevation on the mesial and distal portions of the lingual surface and, occasionally, the labial surface of incisors.

mar·gi·nal ridge

(mahr'ji-năl rij) [TA]
Rounded edges of a tooth where the occlusal surface meets the mesial or distal surfaces and forms a ridge or crest.
Synonym(s): marginal crest of tooth [TA] , crista marginalis dentis.

marginal ridge,

n See ridge, marginal.
References in periodicals archive ?
The technique is taught in two phases, firstly as Task One which leaves a small amount of plastic tooth material as a marginal ridge and moving on to Task Two with box creation.
Indeed, there is currently debate concerning the indications for pulpal therapy when a primary molar is asymptomatic with some authors suggesting that a fractured marginal ridge alone is not necessarily an indication for pulpotomy treatment.
In the treatment choices selected for a mesio-occlusal cavity tooth 85 resulting in loss of more than half the marginal ridge, although with no clinical symptoms but an associated sinus for a non-anxious child patient, pulpectomy (calcium hydroxide and zinc oxide) was selected by 8/32 respondents whilst extraction with LA by 4/32 and other treatments by 6/32 postgraduates.
The extension was done up to the point that 2/3 of the mesiodistal width of the teeth in both buccal and lingual surfaces remained, and in the occlusal cavity up to the point that the remaining width of the marginal ridge was the same as that of a bur 256 (0.