OBJECTIVE The aim of this study was to investigate whether labial tooth inclination and alveolar bone loss affect the moment per unit of force (Mt/F) in controlled tipping and consequent stresses on the periodontal ligament (PDL). METHODS Three-dimensional models (n = 20) of maxillary central incisors were created with different labial inclinations (5°, 10°, 15°, and 20°) and different amount...

Labial talon cusp, or dens evaginatus is a very rare dental anomaly of unclear etiology and significance. It can occur as an isolated finding or be associated with other dental anomalies or some syndromes. The present report describes two Caucasian males with labial talon cusp on maxillary permanent left central incisors. In both cases accessory cusp caused plaque accumulation and marginal ging...

It has been shown that the maxillary palps of Locusta migratoria (L.) play an important part in food selection when the insect has not been deprived of food for a long period (Blaney & Chapman, 1970; Blaney, Chapman & Wilson, 1973). The receptors primarily concerned are those on the flexible dome at the distal tip of the palp, and in the fifth instar larvae of Locusta there are about 370 of the...

This case report presents surgical endodontic management outcomes of maxillary incisors that were infected via the lateral canals. Two cases are presented in which endodontically-treated maxillary central incisors had sustained lateral canal infections. A surgical endodontic treatment was performed on both teeth. Flap elevation revealed vertical bone destruction along the root surface and infec...

A new species, Formica ribbeckei Radchenko & Perkovsky, sp. nov. , is described based on four workers from late Eocene Rovno amber (Ukraine). It most resembles F. flori Mayr, 1868 but differs the latter mainly by 5-segmented maxillary palps with preapical segment subequal in length to apical one, and shorter first funicular segment. Fossil luteola Presl, 1822, trigona macrognatha 1822 q...

To cite: Bargale S, Sagari S, Purohit S, et al. BMJ Case Rep Published online: [please include Day Month Year] doi:10.1136/bcr-2013202300 DESCRIPTION The occurrence of talon cusp in the deciduous dentition is very rare. Aetiology for the formation of the talon cusp is unknown. However, it may be due to the combination of genetic and environmental factors and hyperactivity of the dental lamina e...

OBJECTIVE Esthetic improvements during orthodontic treatment are achieved by changes in positions of the lips and surrounding soft tissues. Facial soft-tissue movement has already been two-dimensionally evaluated by cephalometry. In this study, we aimed to three-dimensionally assess positional changes of the adult upper lip according to simulated maxillary anterior tooth movements by white ligh...

Diverse morphological tooth deformities are found in various shapes, textures, and prevalence. They can be sporadic or syndromes, nutritional, environmental, genetic, and ethnic related. Most of these tooth-born (ie, patient born with the deformation) deformations (eg, shovel-shaped incisors, tuberculum Carabelli, variations in number and shape of cusps, dens invaginatus, taurodontism) have bee...

In the maxillary anterior region, the gingival labial margin position is an important parameter in the achievement of an ideal smile. The relationship between the periodontium and the restoration is critical if gingival health and esthetics are to be achieved. Periodontal therapy is a necessary and useful adjunct when any anterior restoration is undertaken. Anterior surgical crown lengthening m...