root apex

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apex

 [a´peks] (pl. apexes, a´pices) (L.)
the pointed end of a cone-shaped part. adj., adj ap´ical.
apex of lung the rounded upper extremity of either lung.
root apex the terminal end of the root of the tooth.

root a·pex

[TA]
the tip of a tooth root, that part farthest from the incisal or occlusal side.

root apex

The end of the root of a tooth. The anatomical landmark in the apical region is the apical foramen.
See also: apex

root a·pex

(rūt āpeks) [TA]
Conic tip of tooth root, that part farthest from incisal or occlusal side.
Synonym(s): apex radicis dentis, root tip.
References in periodicals archive ?
The seeds were dried on autoclaved filter paper and cultured in triplicate on basal MS medium containing Murashige and Skoog mineral salts, 3% sucrose and 7 g/l agar and incubated in growth chamber at ambient temperature and light conditions to obtain explants (shoot and root tip, basal plate, leaf blade) for genetic transformation experiments.
The surgeon can now visualize the entire bony crypt, lesion, and root tip securely and reliably.
A three-mm segment of root tip was removed and transferred into a microcentifuge tube and stored at -70[degrees]C until extraction.
After the exposure period has elapsed, the bulbs were transferred into clean tap water and root tip samples from all replicates were obtained at 24h and 44h postexposure.
The coronal two-thirds of the root surface was covered with saline-soaked wet gauze, and the apical 3 mm of the root tip was sectioned with a diamond point bur (Komet 858; Komet, Rock Hill, SC, USA) under copious irrigation with sterile saline.
Inclusion Criteria: Healthy children aged 3-8 years old who could receive dental treatment under general anesthesia; deciduous molars with deep caries or those close to the site of removed pulp detritus; clinical and imaging examinations revealed deeply carious deciduous molars without pulpal degeneration (without spontaneous pain history, palpation pain, percussion pain, swelling, fistula, pathological movement or alveolar bone destruction at the root tip); available for prefabricated metal crown (PMC) repair after treatment.
Other parasitic plants tap directly into their host plants through the use of a modified root tip known as a haustorium.
One simulator output was connected to the wire segment that imitated the tooth root tip, the other output was connected to the passive electrode of the apex locator E2.
About 2-3 mm terminal end of each root tip was then dissected and directly used for chromosome analysis or transferred into 70% ethyl alcohol and stored at 4[degrees]C for later investigation.