In the present study 80 freshly extracted permanent, single canaled maxillary anterior teeth and mandibular premolars were selected. The apical leakage was assessed in relation to different root canal obturation techniques using 2% aqueous solution of methylene blue dye and the measurement was done by stereomicroscope. In this study all the teeth exhibited some amount of apical leakage. Low temperature thermoplasticized gutta percha technique exhibited the least amount of leakage when compared to all the other techniques used. Lateral condensation was considered the second best root canal obturation technique. Single cone condensation method (control group) exhibited maximum amount of leakage compared to all the other root canal obturation techniques.

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Apexification procedure was performed in thirteen adult patients, involving eighteen maxillary anterior teeth. The root canals were subjected to standard preparations, before filling the canals with calcium hydroxide - propylene glycol paste. The paste was intentionally pushed beyond the apices. Apical hard tissue barrier was noted in fifteen teeth. Three teeth had to be surgically treated. The above observation demonstrates that, successful apexification can also be achieved in adults and that propylene glycol can be used as a vehicle, as it has desirable properties and is well accepted by the tissues.

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The telon cusp, which appears like an “Eagle's Telon” is usally seen on cingulum area of maxillary permanent incisors. The deep developmental grooves associated with the sloping lingual aspect of tooth surface is prone for caries. Hence it should be prophylactically restored. Exposure of pulp horn often necessitates endodontic therapy. Two cases of telon cusps are reported. The first case had telon cusp in no. 12 and deep developmental groove on lingual aspect. Carious involvement of the groove had led to pulp involvement. The second case presented with bilateral telon cusps in no. 12 and 22. Occlusal interference in this case necessiated rehabilitation in the form of cuspal grinding.

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96 mandibular central incisors and 92 mandibular lateral incisors were studied radiologically to evaluate the configuration of root canal system. Each tooth was radiographed from two directions viz. buccolingual and mesiodistal. 4.16% of the central incisors and 6.52% lateral incisors exhibited two root canals, 35.42% of the root canals were curved in the centrals and 39.13% in the lateral incisors. Apical location of foramen was seen in 70.83% of central incisors and 65.21% of lateral incisors.

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Full text not available  [PDF]

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Full text not available  [PDF]