Associated dental anomalies: case report

Garib, Daniela Gamba; Zanella, Nildiceli Leite Melo; Peck, Sheldon

doi:10.1590/s1678-77572005000400021

Cited by 16 publications

(18 citation statements)

References 22 publications

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“…This ectopia usually selfcorrects and does not require intervention 12,25 unless it is very severe. 26 The present sample included two cases of mesial angulation and impaction of mandibular second molars, a rare irregularity of eruption affecting 0.06% of the population. 19 The occurrence of two cases in 203 patients represents a prevalence rate of 1%, which is significantly higher compared to the prevalence for the general population ( Table 2).…”

Section: Discussionmentioning

confidence: 99%

Increased Occurrence of Dental Anomalies Associated with Second-Premolar Agenesis

Garib

Peck

Gomes

2009

The Angle Orthodontist

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112

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Objective: To evaluate the prevalence of dental anomalies in patients with agenesis of second premolars and compare the findings with the prevalence of these anomalies in the general population. Materials and Methods: A Brazilian sample of 203 patients aged 8 to 22 years was selected. All patients presented agenesis of at least one second premolar. Panoramic and periapical radiographs and dental casts were used to analyze the presence of other associated dental anomalies, including agenesis of other permanent teeth, ectopia of unerupted permanent teeth, infraocclusion of deciduous molars, microdontia of maxillary lateral incisors, and supernumerary teeth. The occurrence of these anomalies was compared with occurrence data previously reported for the general population. Statistical testing was performed using the chi-square test (P Ͻ .05) and the odds ratio. Results: The sample with agenesis of at least one second premolar presented a significantly increased prevalence rate of permanent tooth agenesis (21%), excluding third molars. Among the sample segment aged 14 years or greater (N ϭ 77), occurrence of third-molar agenesis (48%) exceeded twice its normal frequency. Significant increases in occurrence of microdontia of maxillary lateral incisors (20.6%), infraocclusion of deciduous molars (24.6%), and distoangulation of mandibular second premolars (7.8%) were observed. Palatally displaced canine anomaly was also significantly elevated (8.1%). Conclusion:The results provide evidence that agenesis of other permanent teeth, microdontia, deciduous molar infraocclusion, and certain dental ectopias are the products of the same genetic mechanisms that cause second-premolar agenesis. (Angle Orthod. 2009;79:436-441.)

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Section: Discussionmentioning

confidence: 99%

Increased Occurrence of Dental Anomalies Associated with Second-Premolar Agenesis

Garib

Peck

Gomes

2009

The Angle Orthodontist

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112

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“…The mandibular second premolar distoangulation frequently self-corrects and do not demand intervention. 12 This ectopia is defined at early stages of the dental development. During root formation, tooth germ spontaneously uprights and erupts in the dental arch (Fig 19).…”

Section: Distoangulation Of Mandibular Second Premolarsmentioning

confidence: 99%

Anomalias dentárias associadas: o ortodontista decodificando a genética que rege os distúrbios de desenvolvimento dentário

Garib

Alencar²,

Ferreira

et al. 2010

Dental Press J. Orthod.

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O presente trabalho versa sobre o diagnóstico e a abordagem ortodôntica das anomalias dentárias, enfatizando os aspectos etiológicos que definem tais irregularidades de desenvolvimento. Parece existir uma inter-relação genética na determinação de algumas dessas anomalias, considerando-se a alta frequência de associações. Um mesmo defeito genético pode originar diferentes manifestações fenotípicas, incluindo agenesias, microdontias, ectopias e atraso no desenvolvimento dentário. As implicações clínicas das anomalias dentárias associadas são muito relevantes, uma vez que o diagnóstico precoce de uma determinada anomalia dentária pode alertar o clínico sobre a possibilidade de desenvolvimento de outras anomalias associadas no mesmo paciente ou em outros membros da família, permitindo a intervenção ortodôntica em época oportuna.

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“…On the other hand, a longitudinal follow up has demonstrated that, in cases of agenesis of premolars, the deciduous molars may be kept in the oral cavity for a long period of time. [15] Bjerklin and Bennet investigated subjects with agenesis of mandibular second premolars and retained mandibular second molars from 11 years of age until the third decade of life. During the observation period, only 2 of the 59 primary teeth were exfoliated, and beyond the age of 20 years no teeth were lost.…”

Section: Discussionmentioning

confidence: 99%

Management of congenitally missing second premolars in a growing child

Jha

2012

J Conserv Dent

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The second premolars have the highest incidence of congenital absence, after the third molars. The problem resides not in the prevalence of congenitally missing premolars but in the selection of a treatment plan that will yield the best results over the long term. The present study reports a case of a 14 year old female patient with bilaterally congenitally missing second mandibular premolars with associated crowding of teeth. The case has been managed using a multi-speciality approach, in which both deciduous mandibular second molars were sectioned and the distal half retained. The retained half was prepared to receive a full coverage restoration which was contoured as a premolar. The space created was then utilized to correct the crowding by fixed orthodontics. A two year follow up shows retained distal half of the deciduous mandibular second molar with correction of crowding and space closure.

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Associated dental anomalies: case report

Cited by 16 publications

References 22 publications

Increased Occurrence of Dental Anomalies Associated with Second-Premolar Agenesis

Increased Occurrence of Dental Anomalies Associated with Second-Premolar Agenesis

Anomalias dentárias associadas: o ortodontista decodificando a genética que rege os distúrbios de desenvolvimento dentário

Management of congenitally missing second premolars in a growing child

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