Root canal morphology of maxillary second premolars in an Indian population

Raj, Udayakumar Jayasimha; Mylswamy, Sumitha

doi:10.4103/0972-0707.71648

Cited by 34 publications

(25 citation statements)

References 18 publications

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“…By comparing the results from several previous studies, the presence of teeth with two canals was significantly higher compared to the prevalence in our study (22,23). 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: Discussioncontrasting

confidence: 54%

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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: Discussioncontrasting

confidence: 54%

“…The upper premolars can have canals that are difficult for treatment because of the proximity of the maxillary sinus and variations of the apical delta (6,7).…”

Section: Introductionmentioning

confidence: 99%

Morphometric Analysis of the Upper Premolars

Stošić¹,

Dačić²,

Ranđelović³

et al. 2016

Acta Facultatis Medicae Naissensis

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“…However, there are numerous racial differences on the root form, number of root, and root canal system. [ 7 8 9 10 ] Proffit in a 40-year review of extraction patterns showed that 30% of cases were treated with extractions in 1953, 76% in 1968, and 28% in 1993. He suggested the decline in extractions since 1968.…”

Section: Discussionmentioning

confidence: 99%

Incidence of risk and complications associated with orthodontic therapeutic extraction

Narendar¹,

Balakrishnan²,

Thangavelu³

et al. 2017

J Pharm Bioall Sci

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Background:Extraction in orthodontics are carried out in the cases where there is space deficiency to align the teeth. The elective extraction of first or second premolars has been discussed in the literature for more than 50 years. In the 1940s and 1950s Nance, Dewel and Carey reviewed this as a useful option, and in the 1970s Logan and other leading orthodontists favoured the extraction as choice. It is not always the elective extraction of premolar is a smooth drive for the surgeon as well as to patient. Sometimes the elective extraction of premolar result in complications, which might be due to both anatomical and surgical factors.Methodology:The study sample consisted of 100 patients referred for one or more orthodontic extractions to the department of oral and maxillofacial surgery were included in this retrospective study at the vivekanandha dental college for women tiruchengode between November 2014 and May 2016. All referrals were from the department of orthodontics. A survey was carried out to record the intraoperative risks and correlated with its morbidity as when occured. All intraoperative morbities were managed appropriately as required.Result and Conclusion:Between November 2014 and May 2016, 100 patients had one or more premolar teeth removed by the oral surgeons. The sample size was 100 patients who had a total of 334 premolars removed. The sample's mean age was 11.4+\- 8.4 years, and 57.0% were male. The average number of teeth extracted per patient was 2.34 +\- 1.46, and 73.8% had complete root development. More than 93.4% of subjects had normal root and bone morphology, whereas 35.65% had variations in root forms and bone texture. The intra-operative and post operative complication rates were 7.4% and 1.9%, respectively. Complications were generally minor (91.9%) and were managed nonoperatively on an outpatient basis. There were no case of oral antral communication.

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“…The graphic presentation of ovals, representing 95% CI of root canal diameters on photography of the dental arch enhance visualization of appropriately positioned and sized access [Figure 1]. It should be emphasized that this could only serve as a guideline, as there are numerous cases demonstrating anatomic variations not only in complex teeth as molars, but also in incisors,[12] canines,[13] and premolars[1415] which are usually considered as teeth with less complicated anatomy. Exact size and location, especially in complex cases, should therefore be always evaluated from periapical radiographs or cone beam computed tomography scan.…”

Section: Discussionmentioning

confidence: 99%

Location and dimensions of access cavity in permanent incisors, canines, and premolars

Krapež

Fidler

2013

J Conserv Dent

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Background:Ideal access cavity assures unobstructed straight-line access to the apical third of the root canal and preserves tooth structure.Aim:The aim of the study was to determine the location and dimensions of access cavity with straight-line access in incisors, canines, and premolars and to evaluate the largest diameter of their root canals in the mesiodistal and vestibulooral direction.Materials and Methods:Twenty extracted teeth of each group were randomly selected and digitally radiographed from the mesiodistal and vestibulooral direction. Position of the straight-line access midline in relation to anatomical landmarks (incisal edges, fissures, and cusps) was recorded. The largest diameters in mesiodistal and vestibulooral direction were measured. Relative frequencies of access position and mean and standard deviation of both diameters were calculated.Results:For the anterior teeth, the predominant location of straight-line access was from incisal edge, except for maxillary central incisors, where location was equally distributed between incisal edge and oral surface. In mandibular premolars, the straight-line access was positioned vestibular from central fissure. In mesiodistal direction, the largest diameter was found for maxillary central incisors and canines (1.54 mm), while the smallest diameter was found for mandibular incisors (0.64 mm). In vestibulooral direction, the largest diameter was found for maxillary first premolar (5.28 mm), while the smallest diameter was found for maxillary lateral incisor (1.39 mm).Conclusions:Knowledge of location and size of access cavity facilitates achieving balance between straight-line access to the apical third of the root canal and preservation of tooth structure.

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Root canal morphology of maxillary second premolars in an Indian population

Cited by 34 publications

References 18 publications

Morphometric Analysis of the Upper Premolars

Morphometric Analysis of the Upper Premolars

Incidence of risk and complications associated with orthodontic therapeutic extraction

Location and dimensions of access cavity in permanent incisors, canines, and premolars

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