Kategorien: Alle - developmental - disease - management - causes

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Undercut

Implant-retained fixed dentures are used in dental treatments to address various issues related to undercuts, which are irregularities in tooth walls that obstruct the proper seating of dental prostheses.

Undercut

Undercut

Undercut Shape Images

Generalized
denture fibroma
Localized

Causes

Aging Changes
Tuberosity with pneumenization of maxillary sinus air cells….etc
Genial tubercle prominence ...
Interior oblique ridge prominence ...
Post Extraction Problems
Uncompressed socket …etc
Bone Disease
Bone tumor….etc
Bone exostosis ...
Soft Tissue Disease
Soft tissue tumor….etc
Fibromatosis ...
Developmental
Mandibular tori….etc

Undercut Management

The use of implant retained fixed dentures
Without flanges ...
Surgical Correction
Bone shaping….etc
Soft tissue corrections….etc
Relief
For one of the bilateral undercuts ...
Utilize It
Rotational path of insertion ...
Unilateral ...
If less than 180 degree ...
Leave It
Reduce distolingual length ...
Outside denture area ...

Defintion ( \Un´dur-kUt\ n (1859) )

3: any irregularity in the wall of a prepared tooth that prevents the withdrawal or seating of a wax pattern or casting
2: the contour of a cross-sectional portion of a residual ridge or dental arch that prevents the insertion of a dental prosthesis
1: the portion of the surface of an object that is below the height of contour in relationship to the path of placement