MyMedR

The prevalance of dens invaginatus in maxillary incisors

Kong YW

Dent J Malaysia Singapore, 1972 May;12(1):9-14.

PMID: 4507360

Matched MeSH terms: Incisor/abnormalities

Talon cusp in two siblings

Meon R

N Z Dent J, 1990 Apr;86(384):42-4.

PMID: 2371002

Talon cusps were observed in a 10-year-old boy and his 12-year-old sister. Although the sister's affected tooth was asymptomatic and free of any occlusal interference, the boy's tooth presented some problems. The affected tooth had displaced the occluding mandibular tooth lingually, and this had resulted in a mid-line shift. To overcome the problem, the talon cusp was ground off and a prophylactic odontotomy performed. Orthodontic treatment was later carried out.

Matched MeSH terms: Incisor/abnormalities*

Double teeth--fusion or gemination?

Nik-Hussein NN

Odontostomatol Trop, 1992 Mar;15(1):16-8.

PMID: 1287606

Double teeth or joined teeth have been described under several different terms and the terminology is often confusing. There are several ways in which union of teeth can occur and the terms that are commonly used to describe the condition are fusion and gemination. Although primary double teeth themselves may be regarded as harmless anomalies, its presence can cause some abnormalities to occur in the permanent dentition. Therefore, early diagnosis of the anomaly is of considerable importance.

Matched MeSH terms: Incisor/abnormalities*

Talon cusp in primary dentition--case report

Meon R

Singapore Dent J, 1990 Dec;15(1):32-4.

PMID: 2097727

A case of talon cusp in the primary maxillary left central incisor is reported. This dental anomaly was not associated with any other somatic or dental abnormality. Though pulpal extension into the cusp was detected radiographically, clinical examination after the cusp was ground failed to reveal any pulpal extension. The tooth was badly carious and was restored with a polycarbonate crown.

Matched MeSH terms: Incisor/abnormalities*

Hypodontia of the primary and permanent dentition

Rushmah Meon

J Clin Pediatr Dent, 1992;16(2):121-3.

PMID: 1498047

The prevalence, possible etiological factors and management of hypodontia was briefly reviewed. A report of a case of hypodontia affecting the primary and permanent lower incisors was described.

Matched MeSH terms: Incisor/abnormalities*

Fulltext Dens invaginatus in a geminated maxillary lateral incisor

Pallivathukal RG, Misra A, Nagraj SK, Donald PM

BMJ Case Rep, 2015 May 22;2015.

PMID: 26002668 DOI: 10.1136/bcr-2015-209672

Dens invaginatus (DI) and gemination are two developmental abnormalities that are well reported in the dental literature, but their coexistence in a single tooth is rare. Such situations worsen the risk factors associated with these anomalies, and the treatment plan should be customised as they possess altered morphology and anatomy. A 19-year-old girl came for evaluation of a cracked tooth in the front region of the upper jaw. The tooth showed clinical features of gemination and radiographic features of DI, and was diagnosed as DI in geminated maxillary lateral incisor. The differential diagnoses based on clinical appearance without radiographic investigation may warrant the treatment approach if these two abnormalities coexist in a single tooth. The report also highlights the importance of three-dimensional imaging in diagnosis and treatment planning of teeth with altered pulp canal anatomy. There are few reported cases in the literature detailing the treatment options for these two anomalies occurring in the same tooth.

Matched MeSH terms: Incisor/abnormalities*

Accessory roots and root canals in human anterior teeth: a review and clinical considerations

Ahmed HM, Hashem AA

Int Endod J, 2016 Aug;49(8):724-36.

PMID: 26174943 DOI: 10.1111/iej.12508

Anterior teeth may have aberrant anatomical variations in the number of roots and root canals. A review of the literature was conducted using appropriate key words in major endodontic journals to identify the available reported cases as well as experimental and clinical investigations on accessory roots and root canals in anterior teeth. After retrieving the full text of related articles, cross-citations were identified, and the pooled data were then discussed. Results revealed a higher prevalence in accessory root/root canal variations in mandibular anterior teeth than in maxillary counterparts. However, maxillary incisor teeth revealed the highest tendency for accessory root/root canal aberrations caused by anomalies such as dens invaginatus and palato-gingival groove. Primary anterior teeth may also exhibit external and internal anatomical variations in the root, especially maxillary canines. Therefore, dental practitioners should thoroughly assess all teeth scheduled for root canal treatment to prevent the undesirable consequences caused by inadequate debridement of accessory configurations of the root canal system.

Matched MeSH terms: Incisor/abnormalities

Hypodontia in the permanent dentition: a study of its prevalence in Malaysian children

Nik-Hussein NN

Aust Orthod J, 1989 Oct;11(2):93-5.

PMID: 2639661

An investigation of the prevalence and distribution of hypodontia was carried out in Malaysian children between the ages of five to fifteen years. Hypodontia occurred in 2.8 per cent of these children. A greater number of females were found to have hypodontia, the ratio of affected females to males is 1.6:1. The teeth most frequently missing were the maxillary lateral incisors followed by the mandibular lateral incisors, then the mandibular second premolars. The aetiology of the condition is discussed. It is noteworthy that studies showing the lower second premolars to be most commonly missing have younger subjects. This suggests delayed development of these teeth in some individuals.

Matched MeSH terms: Incisor/abnormalities

Talon cusp in Malaysia

Rusmah, Meon

Aust Dent J, 1991 Feb;36(1):11-4.

PMID: 2029226

Five hundred and thirty-six patients were examined for the presence of talon cusps. The anomaly was observed in 28 patients (5.2 per cent). There was no sex predilection in the occurrence. Only two patients had a bilateral occurrence, with the maxillary lateral incisors being the most commonly affected. Radiographic evidence of pulpal extension into the cusp was observed in five patients. Many of the affected teeth presented with deep developmental grooves some of which were carious and/or occlusal interference leading to malocclusion.

Matched MeSH terms: Incisor/abnormalities*

Familial cases of missing mandibular incisor: three case presentations

Chai WL, Ngeow WC

Dent Update, 1999 Sep;26(7):298-302.

PMID: 10765775

Hypodontia is the congenital absence of one or more teeth because of agenesis. The most commonly missing teeth are the third molars, the maxillary lateral incisors and the second premolars. Cases are presented of three patients with a missing mandibular incisor.

Matched MeSH terms: Incisor/abnormalities*

Supernumerary teeth in the premaxillary region: its effects on the eruption and occlusion of the permanent incisors

Nik-Hussein NN

Aust Orthod J, 1990 Oct;11(4):247-50.

PMID: 2152540

The presence of supernumerary teeth in the premaxillary region may cause a variety of pathological effects. This study was carried out to determine the various aspects of supernumerary teeth in the premaxillary region, particularly the effects of the supernumerary teeth on the permanent incisors and surrounding tissues. Approximately 20 percent of the patients (n = 49) with supernumerary teeth did not present with any abnormality. A high proportion of patients (37.9 percent) had delayed or failure of eruption of permanent teeth and 24.1 percent had rotation or displacement of permanent teeth. Other effects observed were median diastema and cystic changes around the unerupted supernumerary tooth. The high proportion of pathological effects seen showed that early diagnosis of the anomaly is important to intercept damage to the adjacent normal teeth and surrounding tissues. However, no cases of root resorption of the permanent teeth due to the presence of supernumeraries were observed.

Matched MeSH terms: Incisor/abnormalities*

Dental anomalies in the primary dentition: distribution and correlation with the permanent dentition

Nik-Hussein NN, Abdul Majid Z

J Clin Pediatr Dent, 1996;21(1):15-9.

PMID: 9161200

The study consisted of analysis of all cases of anomalies in the primary dentition that were seen or treated by the authors in the Department of Children's Dentistry and Orthodontics. A total of 79 occurrences of anomalies was seen in 65 children. The anomalies detected were double teeth, hypodontia and supernumerary teeth. Radiographic examinations of the affected children showed that over 60% of the cases with anomalies in the primary dentition are associated with anomalies of the succadeneous permanent dentition. All subjects with hypodontia of the primary dentition presented with hypodontia of the permanent dentition. However, anomalies of the permanent dentition were seen in 59% of subjects with primary double tooth and 50% of subjects with primary supernumerary tooth.

Matched MeSH terms: Incisor/abnormalities

Enamel defects in a fluoridated south-east Asian community

Chellappah NK, Vignehsa H, Lo GL

Aust Dent J, 1990 Dec;35(6):530-5.

PMID: 2090085

The prevalence and distribution patterns of enamel defects in maxillary incisors was assessed in 194 Singaporean children aged 11-15 years and belonging to three different ethnic groups. All were born and continuously resident in Singapore, which has a tropical climate. The water supply was fluoridated in 1957 at a level of 0.7 ppm. The mouth prevalence of defects was 71.5 per cent and the tooth prevalence was 55.9 per cent; 82 per cent of all affected teeth demonstrated white lesions of various forms. Although there was no sex difference in the prevalence and distribution pattern of defects, some racial differences were observed. The results were compared with data from other studies where the same classification of defects was used.

Matched MeSH terms: Incisor/abnormalities

Prevalence of isolated maxillary lateral incisor agenesis in Syrian adolescents

Kabbani T, Abdullah N, Rsheadat Y, Hassan MI

J Orofac Orthop, 2017 Jan;78(1):62-69.

PMID: 27896416 DOI: 10.1007/s00056-016-0064-y

PURPOSE: This research is designed to obtain a better understanding and provide more insight of this phenomenon through evaluating the prevalence of congenital absence of maxillary lateral incisors in a Syrian population.

METHODS: The method involved clinical examination of 8000 school children with an equal number of males and females (age range 12-15 years) to identify students only affected by bilateral or unilateral congenital absence of maxillary lateral incisors. Agenesis was determined based on radiological evidence.

RESULTS: The results of this study showed that the prevalence of isolated maxillary lateral incisors agenesis was 1.15%. In the sample studied, 66.3% of the patients were female and 33.7% were male (p incisor was found to be microdont in 43.75%, right lateral in 47.6%, and left lateral in 52.4%.

CONCLUSION: The results of this study allow the conclusion that the prevalence of isolated maxillary lateral incisors agenesis in a Syrian population is within the average range with regard to other populations. A significant familial component to the etiology of maxillary lateral incisors agenesis was found.

Matched MeSH terms: Incisor/abnormalities*

Diagnostic ability of computed tomography using DentaScan software in endodontics: case reports

Siotia J, Gupta SK, Acharya SR, Saraswathi V

Int J Comput Dent, 2011;14(4):321-34.

PMID: 22324223

Radiographic examination is essential in diagnosis and treatment planning in endodontics. Conventional radiographs depict structures in two dimensions only. The ability to assess the area of interest in three dimensions is advantageous. Computed tomography is an imaging technique which produces three-dimensional images of an object by taking a series of two-dimensional sectional X-ray images. DentaScan is a computed tomography software program that allows the mandible and maxilla to be imaged in three planes: axial, panoramic, and cross-sectional. As computed tomography is used in endodontics, DentaScan can play a wider role in endodontic diagnosis. It provides valuable information in the assessment of the morphology of the root canal, diagnosis of root fractures, internal and external resorptions, pre-operative assessment of anatomic structures etc. The aim of this article is to explore the clinical usefulness of computed tomography and DentaScan in endodontic diagnosis, through a series of four cases of different endodontic problems.

Matched MeSH terms: Incisor/abnormalities

Pre-eruptive intracoronal dentin defects of permanent teeth

Nik NN, Abul Rahman R

J Clin Pediatr Dent, 2003;27(4):371-5.

PMID: 12924738

This study was conducted to determine the prevalence of pre-eruptive intracoronal dentin defects from panoramic radiographs from a group of children and young adults aged 20 years and below. The radiolucent lesions were noted with regard to which teeth were affected, the location of the defects and the size of the defects relative to the width of dentin. Out of 1007 radiographs examined, 275 (27.3%) have pre-eruptive dentin defects. The prevalence of anomaly among males was 28.4% as compared to 26.2% among females. However, the difference between genders was not significant, thus subsequent results have been combined. Of 275 subjects with dentin radiolucencies, 243 subjects (88.7%) had only one affected tooth, 30 subjects (10.9%) had two teeth affected and 2 subjects (0.7%) had three affected teeth. The tooth prevalence of the anomaly was 2.1% and most of the lesions occurred as a single occurrence on the affected tooth. Within each tooth type, the highest tooth prevalence of intracoronal dentin defect was found in the upper first premolar (5.1%). More than half of the lesions extended less than 1/3 of the width of the dentin thickness. The high prevalence of the condition indicates the need for increased awareness and recognition of this during radiographic examination of teeth in the pediatric age group in early pre-eruptive stages so that early detection and diagnosis can be made and treatment can be done at the most appropriate time.

Matched MeSH terms: Incisor/abnormalities

Displaying all 16 publications