|Year : 2011 | Volume
| Issue : 1 | Page : 68-70
Posterior neonatal teeth
A Kumar, H Grewal, M Verma
Department of Pediatric and Preventive Dentistry, Maulana Azad Institute of Dental Sciences, New Delhi, India
|Date of Web Publication||23-Apr-2011|
Department of Pediatric and Preventive Dentistry, Maulana Azad Institute of Dental Sciences, BSZ Marg, MAMC Complex, New Delhi - 110 002
| Abstract|| |
Teeth which are present in the oral cavity of newborn infant at the time of birth are called "natal teeth" and which erupts in first month of postnatal life are called as "neonatal teeth." The incidence of these teeth is 1 in 2000 to 1 in 3500 live birth. The most common natal teeth reported are mandibular central incisors followed by maxillary incisors and mandibular canine. The natal or neonatal tooth in maxillary molar region is a rare occurrence. This article represents a rare case of bilateral neonatal maxillary molar teeth.
Keywords: Molars, maxillary arch, neonatal teeth
|How to cite this article:|
Kumar A, Grewal H, Verma M. Posterior neonatal teeth. J Indian Soc Pedod Prev Dent 2011;29:68-70
| Introduction|| |
The teeth which are present in the oral cavity of newly born infants either at the time of birth or erupt soon after birth have been reported since 23 BC.  Various terms have also been used to designate these teeth like congenital teeth, fetal teeth, predeciduous teeth, premature teeth, precociously erupted teeth, and dentitia praecox. , Massler and Savara  defined these teeth as natal and neonatal teeth. The teeth which are present at birth designated as natal while those erupt within 30 days after birth as neonatal teeth.
The exact etiology of natal and neonatal teeth is not known. Various factors have been suggested by many authors e.g. familial pattern like hereditary transmission of a dominant autosomal gene,  superficial position of tooth germ,  endocrine disturbances,  osteoblastic activity in area of the tooth germ 5 , infection or malnutrition,  febrile status, , hypovitaminosis  and syndromic association , like Hallerman-Streiff syndrome, Ellis-van Creveld syndrome More Details, Craniofacial dysostosis, etc.
The incidence of natal teeth ranges from 1:2000 to 1:3500 live birth. ,, Bodenhoff  reported the incidence of natal and neonatal teeth as 0.3- 0.5%. These teeth are more common in the mandibular arch than the maxillary arch and are more common in the incisor region than the canine and molar region. The 85% of natal and neonatal teeth found in the mandibular incisor region, 11% in maxillary incisor region, 3% in mandibular canine region, and 1% in maxillary canine and molar region.  A neonatal tooth in maxillary molar region is a rare finding and this article represents a case of bilateral neonatal maxillary molars.
| Case Report|| |
A 3-month-old female Muslim child was brought to the Department of Pediatric and Preventive Dentistry, Maulana Azad Institute of Dental Sciences, New Delhi, India, with a chief complaint of early eruption of few teeth and crying of child especially at the time of feeding. Mother gave a history of consanguineous marriage. Medical history was non-contributory. Mother of child told that they noticed these teeth around 2 months back.
On intra-oral examination, the teeth present were deciduous maxillary right first molar (54) and deciduous maxillary left first and second molars (64 and 65) [Figure 1] and [Figure 2]. The deciduous maxillary left second molar was excessively mobile, just hanging with gingival tissue causing discomfort to nursing mother and also to the child. On soft tissue examination there was an inflammation on hard palate. RVG examination [Figure 3] revealed that these teeth were from normal series of deciduous teeth and not the supernumerary. Since there was a potential risk of aspiration and swallowing of deciduous maxillary left second molar, therefore extraction of this tooth was carried out under aseptic conditions. The tooth was rootless [Figure 4].
| Discussion|| |
More than 90% of natal and neonatal teeth are prematurely erupted deciduous series of teeth, whereas less than 10% are supernumerary.  In the present case these teeth were from normal series of deciduous teeth, but the deciduous maxillary left second molar was highly mobile, so it was extracted keeping in view the risk of aspiration and swallowing. Generally, extraction in newly born infants may cause bleeding problem because the bacterial flora present in the digestive tract of newborn infants may be ineffective in the production of Vitamin K during first 10 days following delivery. Vitamin K plays a major role in the prothrombine synthesis in the liver. Therefore, it is always better to wait 8-10 days after birth for any extraction procedure.
Various etiological factors have been proposed by many authors ,,,,,, although the exact etiology is not known. In the present case medical history revealed that mother led a normal pregnancy period and the family history was negative for natal or neonatal teeth. There was an inflammation over the palate that could be because of infection, so infection could be the possible reason for early eruption of teeth in the present case.
| References|| |
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[Figure 1], [Figure 2], [Figure 3], [Figure 4]