Configurations and deviations of root canals of maxillary first premolars

Carns, E.John; Skidmore, A.E.

doi:10.1016/0030-4220(73)90340-x

Cited by 94 publications

(83 citation statements)

References 2 publications

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“…Similar findings were observed in studies by Carns EJ et al (12), Vertucci FJ et al (13) The results of our analysis support these statements. However, there are studies in which the upper first premolar usually had one root (14).…”

Section: Discussionsupporting

confidence: 94%

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: 94%

Morphometric Analysis of the Upper Premolars

Stošić¹,

Dačić²,

Ranđelović³

et al. 2016

Acta Facultatis Medicae Naissensis

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show abstract

“…Chaparro et al (1999) found a high incidence of two roots (56.7%) in P 1 in a southern Spanish population. In a similar study on an American Caucasian population, Carns and Skidmore (1973) repported the incidence of two roots to be 57.0%. In addition, Scott and Turner (2000) recorded incidence of this trait in Western Eurasia varies from 30.0% to 60.0%.…”

Section: Discussionmentioning

confidence: 99%

Root and canal morphology of human permanent teeth in a Sri Lankan and Japanese population

Peiris

2008

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The main purpose of this study was to investigate the root and canal morphology of Sri Lankan and Japanese permanent dentition. Two thousand Sri Lankan and 976 Japanese permanent teeth were examined. The number of roots in premolars and molars and the prevalence of C-shaped (gutter shaped) roots in mandibular second molars were recorded. Root canal morphology was studied using a clearing technique. The examination of root canal systems of the teeth was based on Vertucci's classification. A higher prevalence of two-rooted maxillary first premolars was observed in Sri Lankans than in Japanese. Sri Lankan maxillary first and second premolars displayed a higher incidence of two canal and two apical foramina forms than those of Japanese. Canal morphology of mandibular first premolars showed higher occurrence of two canals with type V (1-2) canal configuration in Sri Lankans than in Japanese. In mandibular molars, Japanese presented with a higher incidence of threerooted first molars and one-rooted second molars than Sri Lankans. C-shaped root was seen in 5.7% of Sri Lankan and 18.8% of Japanese second molars examined. In the distal root of mandibular first molars, Japanese showed a higher prevalence of two apical foramina with type IV (2) and additional canal forms than that of Sri Lankans. Japanese mandibular second molars exhibited a higher occurrence of one-root canal forms than that of Sri Lankans. In addition, mandibular incisors and canines of Sri Lankans showed a higher prevalence of two canals with type III (1-2-1) canal form than Japanese. Root and canal morphologies of Japanese and Sri Lankan people are consistent with those of people of East Asian and European (western Eurasia) origin, respectively. In human dentition, the differences of the internal canal morphology are more evident and constant than that of external root morphology among different population groups.

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“…In the case of maxillary first premolar, three root canals are found at a frequency of 0.5 to 6%, [4][5][6][7] generally with one canal in each of three roots. The incidence of threerooted maxillary first premolar was 0 to 6% in different studies (Tables 1 and 2).…”

Section: Maxillary Premolarsmentioning

confidence: 99%

“…The incidence of threerooted maxillary first premolar was 0 to 6% in different studies (Tables 1 and 2). 6,8,9 In the case of second premolar, laboratory studies have demonstrated a lower of three root canals between 0.3 and 2%. 4,6,10,11 Bellizzi and Hartwell 7 found only 1.1% of teeth with three canals, and did not report any with three roots.…”

Section: Maxillary Premolarsmentioning

confidence: 99%

Extra Roots and Root Canals in Premolar and Molar Teeth: Review of an Endodontic Challenge

Mohammadi¹,

Shalavi²,

Jafarzadeh³

2013

The Journal of Contemporary Dental Practice

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The main goal of endodontic treatment is healing of the periapical tissues which are gained by elimination of bacteria and their byproducts from the canal and prevention from reinfection. Understanding of root canal anatomy is an essential part in endodontic treatment. Anatomic forms and variations in special teeth should be well known, one of them is extra roots/ canals. Although possible aberrations of canal anatomy should be considered for all teeth, some teeth should be highlighted. This review addresses the prevalence, diagnosis (clinical and radiographic), and endodontic management of teeth with extra roots/canals.

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Configurations and deviations of root canals of maxillary first premolars

Cited by 94 publications

References 2 publications

Morphometric Analysis of the Upper Premolars

Morphometric Analysis of the Upper Premolars

Root and canal morphology of human permanent teeth in a Sri Lankan and Japanese population

Extra Roots and Root Canals in Premolar and Molar Teeth: Review of an Endodontic Challenge

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