Root canal morphology of the human maxillary second premolar

Vertucci, Frank J.; Seelig, Alexander; Gillis, Robert R.

doi:10.1016/0030-4220(74)90374-0

Cited by 182 publications

(188 citation statements)

References 8 publications

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“…Surprisingly, in our sample the percentage of the presence of one canal was reported in 79.2% of the upper second premolars, which was higher than the percentage reported by other authors, despite the fact that even in their research the percentage of one canal was more common (6,7). The frequency of three canals was much lower as only one premolar had three canals (2%), which was also observed in the study of Vertucci F et al (24).…”

Section: Discussionsupporting

confidence: 78%

Morphometric Analysis of the Upper Premolars

Stošić¹,

Dačić²,

Ranđelović³

et al. 2016

Acta Facultatis Medicae Naissensis

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ACTA FACULTATIS MEDICAE NAISSENSIS UDC: 616.314.6 SU M M A RYMorphological and anatomical characteristics of the tooth are of great importance for clinical dentistry. These aspects of the tooth can be better conceptualized from the perspective of external and internal morphology of dental crowns and roots.The aim of this study was to determine the average total length of the upper first and second premolars, the average length of crowns, the average length of roots and to determine the most common number of the roots and root canals of these teeth.We used 41 first and 48 second extracted upper premolars.The length of these teeth was measured by a digital micrometer. The number of roots was determined visually, and each tooth was longitudinally dissected across the vestibular-palatal plane for determining the number of root canals.The average total length of the upper first premolars was 22.5 mm, the average crown length was 8.8 mm, the mean root length was 13.7 mm. The upper first premolars usually have two roots in 53.7% and two root canals in 82.9%. The average total length of the upper second premolars was 22.5 mm. The average crown length was 8.4 mm and the mean root length was 14.1 mm. The upper second premolars usually have one root in 89.6% and one root canal in 79.2%.The determined average values of the length of these teeth and the length of their crowns and roots were similar to the values of the same population reported by other authors.

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Section: Discussionsupporting

confidence: 78%

Morphometric Analysis of the Upper Premolars

Stošić¹,

Dačić²,

Ranđelović³

et al. 2016

Acta Facultatis Medicae Naissensis

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show abstract

“…4 The configuration of the two canals may vary with two separate canals and two exits, two canals and one common exit, one canal dividing and having two exits. In one study, 5 it was found that 59% of maxillary second premolars had accessory canals. As with the first maxillary premolar, the apical third of the root may curve quite considerably, mainly to the distal, sometimes buccally.…”

Section: Maxillary Second Premolarmentioning

confidence: 99%

Endodontics: Part 4 Morphology of the root canal system

Carrotte¹

2004

Br Dent J

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“…The selected teeth presented their root and coronary structures preserved, completely formed apex, root canal of type I of Vertucci 25 , and no evidence of calcification, resorption, fractures, endodontic treatment and metal restorations. Tissues and debris were removed from the root surface by manual curettes.…”

Section: Selection and Preparation Of The Samplesmentioning

confidence: 99%

Influence of the instrument used for cervical preflaring on the precision of 2 Eletronic Apex Locators

Guimarães

Tartari

Fernandes

et al. 2016

RGO, Rev. Gaúch. Odontol.

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ObjectiveThis study was aimed at evaluating the influence of cervical preflaring using LA-Axxes No. 1 bur (SybronEndo, Glendora, USA) or S1 and SX ProTaper files (Dentsply Maillefer, Ballaigues, Switzerland) Results McNemar's test (α<0.05) was used to detect differences in the accuracy of the EALs before and after each preflaring with different instruments, and to detect difference in accuracy among devices. No differences were found concerning the accuracy of the EALs (P > 0.05) after the cervical preflaring, regardless of the used instrument. ConclusionThe preflaring procedure increased the number of accurate measurements for both EALs, with statistical difference for Joypex 5 when the preflaring was performed with LA-Axxess. However, after the cervical preflaring, the EALs showed similar accuracy, regardless of the used instrument.Indexing terms: Dental instruments. Endodontics. Odontometry. RESUMO ObjetivoAvaliar a influência do preparo cervical utilizando a broca LA-Axxess nº 1 (SybronEndo, Glendora, EUA) ou os instrumentos ProTaper S1 e SX (Dentsply Maillefer, Ballaigues, Suíça) na precisão dos Localizadores Apicais Eletrônicos (LAEs): Root ZX mini (J. Morita Corporation, Tóquio, Japão) e Joypex 5 (Denjoy, Changsha, China). MétodosTrinta incisivos inferiores foram acessados e o comprimento do canal radicular (CCR) determinado com uma lima K #15 com o auxílio de um estereomicroscópio. Em seguida, os dentes foram distribuídos em dois grupos (n=15) referentes ao preparo cervical com LA-Axxess ou instrumentos ProTaper. Os dentes foram incluídos em alginato e o CCR determinado pelos LAEs antes e após o preparo cervical. Os dados foram classificados em: precisos, se a diferença na medida do CCR era ≤ 0,05 mm; e imprecisos, se a diferença era >0,5 mm ou estava além do CCR.Resultados O teste de McNemar (α<0.05) foi utilizado para detectar diferenças na precisão dos LAEs antes e após o preparo com os diversos instrumentos, e para detectar diferenças na precisão entre os aparelhos. Não foram identificadas diferenças na precisão entre os dois LAEs (P>0,05) após o preparo cervical, indiferente do instrumento utilizado. ConclusãoO preparo cervical aumentou o número de medições precisas dos LAEs, com diferença estatística para Joypex 5 após o uso da LA-Axxess, contudo os aparelhos apresentaram precisão similar após o preparo cervical, indiferente do instrumento utilizado.

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Root canal morphology of the human maxillary second premolar

Cited by 182 publications

References 8 publications

Morphometric Analysis of the Upper Premolars

Morphometric Analysis of the Upper Premolars

Endodontics: Part 4 Morphology of the root canal system

Influence of the instrument used for cervical preflaring on the precision of 2 Eletronic Apex Locators

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