crowning

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crowning

 [krown´ing]
the appearance of the fetal scalp at the vaginal orifice in childbirth.

crown·ing

(krown'ing), Avoid the jargonistic use of this word to refer to mere visibility of the fetal head during a uterine contraction.
1. Preparation of the natural crown of a tooth by removal of part or all of the natural structure and replacing the prepared surfaces with a veneer of suitable dental material (gold or nonprecious metal casting, porcelain, plastic, or combinations).
2. That stage of childbirth when the fetal head has negotiated the pelvic outlet and the largest diameter of the head is encircled by the vulvar ring.
Synonym(s): tooth capping

crown·ing

(krown'ing)
1. Preparation of the natural crown of a tooth and covering the prepared crown with a veneer of suitable dental material (gold or nonprecious metal casting, porcelain, plastic, or combinations).
2. That stage of childbirth when the fetal head has negotiated the pelvic outlet and the largest diameter of the head is encircled by the vulvar ring.

crown·ing

(krown'ing)
Preparation of natural crown of tooth by removal of part or all of the natural structure and replacement of prepared surfaces with a veneer of suitable dental material (gold or nonprecious metal casting, porcelain, plastic, or combinations).