We investigated the distribution of cortical, callosal, and thalamic connections from the primary somatosensory area (S1) in naked mole-rats, concentrating on lower incisor and forelimb representations. A neuronal tracer (WGA-HRP) was injected into the center of each respective representation under guidance from microelectrode recordings of neuronal activity. The locations of cells and terminal...

The purpose of the study was to investigate the relationship between incisor and condyle movement during protrusion in children with primary dentition. Subjects were categorized into two age groups. A primary dentition group consisted of 20 children and a permanent dentition group consisted of 25 women. The occlusions and TMJs in both groups were normal, with no history of orthodontic treatment...

During a survey in a rural area of northern Namibia (South West Africa) in 1988,4-year-old twin boys were seen (Fig 1). One child had a supplemental primary maxillary lateral incisor on the right side; the other had a supplemental primary maxillary incisor on the left side (Figs 2 and 3, see next page). Root length occlusal and panoral radiographs were taken which showed that each child had a s...

This report involves two cases of extreme dilaceration of the permanent mandibular incisor teeth. A history of trauma sustained to the primary dentition was elicited in each case. Although a relatively rare condition, several reports have been made regarding dilacerated maxillary incisor teeth. Very few case reports could be found involving dilacerated mandibular teeth.

Radicular cysts are considered rare in the primary dentition, comprising only 0.5 to 3.3% of the total number of radicular cysts in both primary and permanent dentitions. The aim of this case report is to present the clinical, radiographic and histological characteristics of radicular cyst associated with primary central incisor. Extraction and enucleation of the cyst was carried out under loca...

Implant restorations have become a primary treatment option for the replacement of congenitally missing lateral incisors. The central incisor and canine often erupt in less than optimal positions adjacent to the edentulous lateral incisor space, and therefore preprosthetic orthodontic treatment is frequently required. Derotation of the central incisor and canine, space closure and correction of...

This clinical article presents a rare presentation of complete intrusion of a maxillary right primary central incisor. Routine examination of a 29-month old female patient revealed an intrusion injury where the primary central incisor was displaced through the floor of the nasal cavity. The traumatic impaction was erroneously diagnosed as an avulsion injury by the attending emergency room physi...

Odontomas are a common type of odontogenic tumor, usually asymptomatic and mostly detected on routine radiographic examination. An 11-years-old male child with the chief complaint of mobility of deciduous dentition in the upper front region was diagnosed with an odontome with an impacted central incisor, missing lateral incisor and retained deciduous incisors following radiographic analysis. Hi...