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.
The dorsal skin of 18 healthy Sprague-Dawley rats was used to investigate the reaction of connective tissue to buffered and unbuffered glutaraldehyde. Both the agents produced well-circumscribed lesions that underwent resolution within 30 days. Observation also shows that 2.0% buffered and unbuffered glutaraldehyde maintained a relatively inflammation-free status in connective tissue.
Delayed replantation of an avulsed tooth with an open apex resulted in failure of revascularization, necrosis of the pulp and extensive external root resorption. Removal of the necrotic pulp and repeated intra-canal dressings of calcium hydroxide over a three year period arrested the inflammatory resorptive process. The process was replaced by replacement resorption leading to ankylosis and infra-occlusion of the affected tooth. As the tooth was asymptomatic, it was retained in the arch to act as a space maintainer. To improve aesthetics, the crown was recontoured using a light-cured resin.
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.
An unusual presentation of rampant caries in a child was described. Lactose from bovine milk, bad feeding habits and poor oral hygiene appear to play a major role in its aetiology.
The problem of dental decay was studied in a sample of 495 Chinese preschool children in Petaling Jaya. The children; 253 males and 242 females ranged in age from 3-6 years. 18.6% of the children was observed to suffer from rampant caries. Only 18.8% were caries free. The dft values ranged from 2.9 +/- 3.12 at 3 years to 5.85 +/- 3.41 at 6 years. The overall mean dft for this group was 4.99 +/- 3.81. Dental treatment was very inadequate. The decayed filled tooth ratio was 6.5:1.
Incidence, aetiology, morphology, histology and symptoms of natal or neonatal teeth are presented. The commonly used terminology natal and neonatal teeth is adopted in this article. A case of an 8-week old girl with natal tooth and sublingual ulceration of the tip of the tongue is described.