Facial infection arising from dens evaginatus

Loh, Han Tong; Lim, Sung-Sam

doi:10.1038/sj.bdj.4805612

Cited by 4 publications

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“…As such, like their forefathers from mainland China, Singaporeans can be considered p ri m a rily as a Mongoloid stock. Morp h o l o gi c a l characteristics in the local population have been documented by the author (three-rooted firs t mandibular molar, 6 five-cusped second mandibular m o l a r , 7 coronal morphology of the mandibu l a r premolar 8 and dens evaginatus 9 ). This additional information of yet another aspect of the Singaporean dentition will help to formulate its distinctive racial morphology.…”

Section: Resultsmentioning

confidence: 99%

Root morphology of the maxillary first premolar in Singaporeans

Loh

1998

Australian Dental Journal

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In a recent textbook of endodontics, 4 the one-root form was given as the lowest (ten per cent) of its various configurations. Three-root forms had also been reported, with a study 5 quoting the highest incidence at six per cent.In view of its varying root form and its canal configuration, the maxillary first premolar can pose some clinical problems. An extraction tends to be more difficult when the tooth is of the two-root form. Endodontic therapy will not be successful if the palatal root is missed out. Orthodontic movement may be more difficult to achieve. Pre-operative radiographic technique may need to be adjusted to demonstrate the seemingly frequent occurrence of the two-root form as evidenced in this study.The aim of this study is to determine the external root morphology of the maxillary first premolar in the Singaporean dentition and to compare the findings with published reports of different races. Materials and methodsExtracted teeth from clinical procedures performed in the Faculty of Dentistry were collected and preser ved in the usual manner. Preservation of the teeth was made by soaking them in a ten per cent formalin solution. After washing, they were boiled in water containing sodium hydroxide for 15 minutes. The teeth were allowed to dry after cleaning.The maxillary first pemolar was identified by the coronal morphological features described earlier.Care was exercised to distinguish it from the second premolar, which does not possess the features of identification so demonstrated by the first premolar. Cases which were ambiguous were not included in this study. Also, data were excluded when the collected teeth were restored occlusally or were heavily broken down, especially in the root regions. In the sample, orthodontic extractions provided many excellent specimens. It was not possible to record personal data like age, sex and race in this retrospective collection.Australian Dental Journal 1998;43:6. 399*Head, Department of Oral and Maxillofacial Surgery, Faculty of D e n t i s t ry, The National Unive rsity of Singapore, Nat i o n a l University Hospital, Singapore. AbstractExtracted teeth were collected from clinical procedures performed in the Faculty of Dentistry, National University of Singapore. A selected sample of 957 maxillary first premolars were subjected to visual examination and digital radiography. There was a higher incidence of two-root form (50.6 per cent) than previously reported for the Singaporean dentition. In the two-root category, 307 teeth exhibited the fused-root form (two fused roots with two root canals) and 177 were distinctively of the two-root form (two separate roots with two root canals and two foramina). The fused-root form was emphasized as an entity in this study. The one-root form accounted for 49.4 per cent. No three-root form was detected.

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Section: Resultsmentioning

confidence: 99%

Root morphology of the maxillary first premolar in Singaporeans

Loh

1998

Australian Dental Journal

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“…This procedure is repeated monthly until the evagination is either removed completely or taken out of traumatic occlusion. Although this treatment is still popular both among the general dental practitioners surveyed (67%) and in the literature, the treatment appears to be unreliable (2,3,13,22).…”

Section: Treatment Approachesmentioning

confidence: 99%

“…The procedure must incorporate the use of rubber dam. This elective pulpotomy procedure has been shown to be effective in some small-scale studies (8,(22)(23)(24).…”

Section: Treatment Approachesmentioning

confidence: 99%

“…The management of dens evaginatus is based upon empirical evidence, with most of the literature being in the form of single case reports (7)(8)(9)(17)(18)(19)(20)(21)(22) and retrospective reviews of patients' notes (2,23). Despite the occasional report of several cases (23)(24)(25)(26) there has, to date, been no controlled clinical trial conducted to evaluate the effectiveness of a particular type of treatment for this anomaly.…”

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confidence: 99%

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Dens evaginatus in the Hong Kong Chinese population

Bedi¹,

Pitts

1988

Dental Traumatology

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A survey was conducted to determine the prevalence and treatment need of permanent teeth with an evaginated odontome in a random sample of 12‐year‐old Chinese schoolchildren living in Hong Kong. A total of 442 12‐year‐old Hong Kong Chinese schoolchildren were examined (215 males and 227 females); 15 children (3%) had teeth with evaginated odontomes present. Males were more commonly affected than females (9:6) and no left‐to‐right difference was detected. In 8 children there was bilateral involvement of collateral teeth. Over twice as many mandibular premolars were affected compared to those in the maxilla (27:11). Guidelines for future epidemiological surveys of this anomaly are discussed. The management of dens evaginatus is based upon empirical evidence and there has, to date, been no controlled clinical trial conducted to evaluate the effectiveness of any particular type of treatment for this anomaly. In the absence of objective evaluation, results are reported of a survey of the approaches of managing dens evaginatus used by general dental practitioners working in Hong Kong.

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“…Interestingly according to Yumikura and Yoshida [49], 42% of evaginations can be expected to contain pulp tissue. Consequently, periapical abscesses can occur on caries free teeth if the tubercle is fractured [50][51][52][53][54][55][56].…”

Section: Introductionmentioning

confidence: 99%

Dental Anomalies in Chinese Children with Cleft Lip and Palate

Wong¹,

Lai

King³

2012

Dentistry

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Background:The prevalence of dental anomalies in children with cleft lip and palate (CLP) has been said to be higher than in the normal children; however, such findings have not been expressed for different racial groups.Aim: To determine the prevalence of anomalies in children with CLP and to ascertain if there were any differences between the prevalence figures for CLP and non-CLP children.Design: This is a retrospective study looking at previously collected clinical records. The sample consisted of 231 pairs of age and gender matched CLP and non-CLP southern Chinese aged between 12 and 16 years. The dental records of the subjects were examined to gather data on anomalies of tooth number, size and shape.Results: It was found that 57.6% of the CLP children had hypodontia, 10.0% hyperdontia, 8.7% taurodontism, 0.8% a double tooth, 1.30% dens evaginatus, and 42.4% had microdontia in the permanent dentition. The CLP subjects had a statistically higher prevalence of hypodontia (p<0.001), supernumerary (p<0.01) and microdontia (p<0.001) than the non-CLP subjects. More CLP children, were found to have one to three types of anomalies, than the non-CLP children (p<0.001). Conclusion:This group of Chinese CLP children demonstrated a higher prevalence of dental anomalies than the non-CLP children.

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Facial infection arising from dens evaginatus

Cited by 4 publications

References 0 publications

Root morphology of the maxillary first premolar in Singaporeans

Root morphology of the maxillary first premolar in Singaporeans

Dens evaginatus in the Hong Kong Chinese population

Dental Anomalies in Chinese Children with Cleft Lip and Palate

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