Upon removal, the canine tooth follicles have a worm-like appearance--further strengthening the belief that the canine tooth buds
are symptom inducing and that ebinyo is of therapeutic value .
were the first to show that decellularized tooth buds
(dTBs) created from unerupted porcine tooth buds
can be used to guide reseeded dental cell differentiation to form completely bioengineered teeth in a minipig model.
With the induction by the tooth bud
mesenchyme, its cells are able to differentiate into odontoblasts .
3) "Fusion" (synodontia) produces teeth that are united by their dentine or enamel or both as the probable result of the union of two or more tooth buds
According to this theory, the supernumerary tooth originates from a lingual extension of a tooth bud
Dental abnormality of the structure and number of teeth can occur in the primary and permanent dentition.1,2 Double tooth is the most common term that has been used to describe anomalies (Fusion or Gemination) in which one tooth is conjoined with another.3 Gemination is defined as the partial development of two teeth from a single tooth bud
following incomplete division.4
Gemination can be defined as an attempt of a single tooth bud
to divide, with the resultant formation of a tooth with a bifid crown and usually, a common root and root canal.
The materials used for filling the root canals in primary teeth should be antibacterial, resorbable, and harmless to periapical tissues and the developing tooth bud
. In addition, it must easily fill the canals, adheres to walls, not shrink, must readily absorb if passed beyond the apex, be easily removed if necessary, be radiopaque and cause no discoloration of the tooth.
A second theory known as dichotomy suggests that the tooth bud
is split to create z teeth on of which are the supernumerary.
Occasionally, malposition of a permanent tooth bud
can lead to eruption at a wrong place.
It is the earliest mesenchymal gene which localizes site of tooth bud
The tooth may become impacted because of adjacent teeth dense overlying bone or excessive soft tissue.4 Different local causes of impacted teeth include lack of space in the jaw an aberrant path of eruption premature loss of primary teeth abnormal positioning of tooth bud
inflammatory or pathological lesions etc.