cementoenamel junction


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junction

 [jungk´shun]
a place of meeting or coming together. adj., adj junc´tional.
atrioventricular junction in the conduction system of the heart, the junction between the atrioventricular node and the nonbranching portion of the bundle of His.
cementoenamel junction the line at which the cementum covering the root of a tooth meets the enamel covering the crown.
gap junction a narrowed portion of the intercellular space, containing channels linking adjacent cells and through which can pass ions, most sugars, amino acids, nucleotides, vitamins, hormones, and cyclic AMP. In electrically excitable tissues the gap junctions serve to transmit electrical impulses via ionic currents and are known as electrotonic synapses; they are present in such tissues as myocardial tissue.
myoneural junction (neuromuscular junction) the site of junction of a motor nerve fiber and a skeletal muscle fiber that it innervates. The discoid expansion of the terminal branch of the axon forms the motor end plate, the neurotransmitter that diffuses across the synapse is acetylcholine.
sclerocorneal junction limbus (def. 2).
ureteropelvic junction the area where the renal pelvis meets the ureter.

ce·men·to·e·nam·el junc·tion

the surface at which the enamel of the crown and the cementum of the root of a tooth are joined.
See also: cervical line.

cementoenamel junction

the junction of the coronal border of the cementum and the apical border of the enamel.

ce·men·to·e·nam·el junc·tion

(CEJ) (sĕ-men'tō-ĕ-nam'ĕl jŭngk'shŭn)
The surface at which the enamel of the crown and the cementum of the root of a tooth are joined.
See also: cervical line

ce·men·to·e·nam·el junc·tion

(CEJ) (sĕ-men'tō-ĕ-nam'ĕl jŭngk'shŭn)
Surface at which enamel of crown and cementum of tooth root are joined.
See also: cervical line
References in periodicals archive ?
Type 1--Talon additional cusp extends to at least half the distance from the cementoenamel junction and the incisal edge.
Furcation involvements correlated with enamel projections from the cementoenamel junction.
The most noticeable differences in the mean values of length were found in studies that measured extracted teeth,13,14 that is, from the incisal edge to the cementoenamel junction rather than the gingival margin, leading to greater length values and therefore smaller ratios (width/ length ratio of 78% for central incisors).
Clinical and radiographical image revealed a fracture of the crown few millimeters below cementoenamel junction (CEJ) which was a complex crown--root fracture (Figure 1& 2).