Browsing: U

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Ultrasonic scaler

An instrument vibrating in the ultrasonic range (approximately 25 000–30 000 cps) which, accompanied by a stream of water, can…

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Ultimate strength

The maximum stress a material can withstand at its point of rupture. Also known as ultimate tensile strength.

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Ulcer, ulceration

A lesion on the surface of the skin or mucosa characterized by discontinuation of the epithelium, deeper than erosion; exhibits…

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UCLA abutment substand

An informal term used to describe a screw‐retained dental crown that is screwed directly into the implant body without an…

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UCLA abutment

Prosthetic implant component developed as a plastic castable pattern that can be modified by adding wax for custom shape and…

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Unglazed restoration

Try‐in of a ceramic or metal‐ceramic restoration to evaluate contour, color, occlusion, and proximal contact tightness. The try‐in is completed…

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Ultrasonic scaler

An instrument vibrating in the ultrasonic range (approximately 25 000–30 000 cps) which, accompanied by a stream of water, can…

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