MORPHOLOGICAL FEATURES OF THE CROWNS OF MAXILLARY SECOND PRIMARY MOLAR AND FIRST PERMANENT MOLAR: AN ODONTOMETRIC STUDY

Comparison of the crown dimensions between the maxillary second deciduous molar and the first permanent molar.

The morphologic relationship of the crown structures of the maxillary second deciduous molar (m2) and the first permanent molar (M1) was investigated with odontometric methods. Materials used were 124 male dental casts taken from Chinese living in Kaohsiung (Taiwan). The mesiodistal and buccolingual diameters, cusp sizes, and intercusp distances were measured. The mean crown diameters were larg...

[Ectopic eruption of the maxillary first permanent molar].

Ectopic eruption of the maxillary first permanent molar is an eruption disturbance. This article discusses current literature views on diagnosis, prevalence, aetiology and treatment of this disturbance. It is a relatively uncommon disturbance and its aetiology remains unclear. A combination of extraction of the maxillary second primary molar and cervical headgear treatment seems the treatment o...

Ectopic Location of Permanent Tooth Germ Accompanied by Infraocclusion of Primary Second Molar

We report the delayed eruption and infraocclusion of a mandibular second primary molar with ectopic location of the permanent successor. This was a rare case where the second premolar was located to the distal side of the impacted mandibular second primary molar. Early intervention is recommended to manage orofacial disfigurement and prevent consequent problems.

Dentoskeletal features in individuals with ectopic eruption of the permanent maxillary first molar

OBJECTIVE The aim of the study was to analyze the prevalence and distribution of ectopic eruption of the permanent maxillary first molar (EEM) in individuals scheduled for orthodontic treatment and to investigate the association of EEM with dental characteristics, maxillary skeletal features, crowding, and other dental anomalies. METHODS A total of 1,317 individuals were included and randomly...

Delayed eruption of maxillary permanent first and second molars due to an ectopically positioned maxillary third molar.