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Primary Incisors (primary + incisor)

Distribution by Scientific Domains

Medical Sciences	76%

Selected Abstracts

Dilaceration of maxillary central incisor: a literature review

DENTAL TRAUMATOLOGY, Issue 5 2010
Nikolaos Topouzelis
In early developmental stages, the permanent tooth germ of the maxillary incisor is situated palatally and superiorly to the apex of the primary incisor and gradually changes direction in a labial direction with its crown coming closer to the resorbing primary root. For reasons of this close relationship between the permanent tooth germ and the apex of the primary incisor, it is believed that an acute trauma to the primary predecessor can cause dilaceration of the long axis of the permanent successor. Clinically, dilaceration can be revealed by palpation high in the labial sulcus or in the hard palate, while its radiographic view is characteristic. The therapeutic approach to the dilacerated maxillary central incisors has to be carefully planned and needs the cooperation of several specialities to attain the final objective. [source]

Long-term effect of different treatment modalities for traumatized primary incisors presenting dark coronal discoloration with no other signs of injury

DENTAL TRAUMATOLOGY, Issue 1 2006
Gideon Holan
Abstract,,, The aim was to compare the long-term outcomes of root canal treatment with that of follow-up-only in traumatized primary incisors in which dark discoloration is the only sign of injury. Root canal treatment was performed in 48 dark discolored asymptomatic primary incisors following trauma. Twenty-five of them [root canal treatment (RCT) group] were followed till eruption of their permanent successors. Ninety-seven dark discolored asymptomatic primary incisors were left untreated and invited for periodic clinical and radiographic examination. Of these, 28 [follow-up (FU) group] were followed till eruption of their permanent successors. The parameters examined included early extraction of the traumatized primary incisor, early or delayed eruption of the permanent successors, ectopic eruption of the permanent successor and signs of enamel hypopcalcification or hypoplasia in the permanent successor. Chi-square test was used for statistical analysis. Seven of 25 (28%) of the RCT group and 32% (nine of 28) of the FU group required early extraction. Five of 25 (20%) of the RCT group and 21% (six of 28) of the FU group showed early or delayed eruption of the permanent successors. Sixteen of 25 (64%) of the RCT group and 79% (22 of 28) of the FU group showed ectopic eruption of the permanent successors. Enamel hypopcalcification or hypoplasia in the permanent successors was equally found (36%) in both groups (nine of 25 in the RCT group and 10 of 28 in the FU group). None of differences was statistically significant. Root canal treatment of primary incisors that had change their color into a dark-gray hue following trauma with no other clinical or radiographic symptom is not necessary as it does not result in better outcomes in the primary teeth and their permanent successors. [source]

Increased primary tooth size in a 47,XXY male: a first case report

INTERNATIONAL JOURNAL OF PAEDIATRIC DENTISTRY, Issue 4 2003
M. L. Hunter
Summary. Increased tooth size has previously been reported in association with Klinefelter syndrome. However, until now, this observation has been restricted to the permanent dentition. In this paper, we report increased mesio-distal width in the primary incisor and molar teeth of a 47,XXY male. [source]

Compound odontoma associated with an unerupted and dilacerated maxillary primary central incisor in a young patient

INTERNATIONAL JOURNAL OF PAEDIATRIC DENTISTRY, Issue 3 2003
K. H. Yeung
Summary., The occurrence of odontoma in the primary dentition is uncommon. There are very few reports of non-eruption of a dilacerated primary tooth in the literature. A rare case of compound odontoma in association with an unerupted dilacerated maxillary primary incisor in a young patient is reported. There was also a developing supernumerary tooth in the vicinity of the odontoma. The clinical features and management of these conditions are discussed. The relevant literature is reviewed. A possible causal relationship between odontoma and dilaceration is highlighted. [source]

Assessment of traumatic injuries to primary teeth in general practise and specialized paediatric dentistry

DENTAL TRAUMATOLOGY, Issue 2 2010
Carl Gösta Rasmusson
Materials and methods:, A total of 323 children with traumatic injuries, 184 boys and 139 girls aged 7,83 months, participated in the study. All the children had first presented at a Public Dental Service clinic where they were examined by general dentists who decided, based on the severity of the trauma, to assign each child to one of the following two groups: Group A , recommended for treatment at the general practise (166 children with 257 traumatized incisor teeth). Group B , recommended for referral to a specialist in paediatric dentistry (157 children with 261 traumatized incisor teeth). Even in Group A, the specialist controlled the treatment decisions. The clinical diagnose and follow-up followed the recommendations presented by Andreasen & Andreasen. Results:, The distribution of trauma by age was similar in both groups, with about 60% occurring between 1 and 3 years. More injured teeth were extracted in children in Group B (n = 111) than in Group A (n = 33). A higher percentage of intruded primary incisors were recorded in Group B (24%) compared with Group A (16%). Similarly, the percentage of concussions/subluxations, lateral luxations and complicated crown fractures was higher in Group B than in Group A. Conclusions:, The group referred for specialist treatment had more severe injuries and needed more complicated treatment than the group recommended for care by general dentists. However, the rate of sequelae in permanent successors was the same in both. [source]

Long-term effect of different treatment modalities for traumatized primary incisors presenting dark coronal discoloration with no other signs of injury

Evaluation of intruded primary incisors

DENTAL TRAUMATOLOGY, Issue 3 2005
Juliana Oliveira Gondim
Abstract,,, Tooth intrusion consists of the displacement of the tooth into its alveolus and is the most common trauma during early infancy. This work aims to evaluate the aspects related to tooth intrusion in primary teeth by monitoring 16 patients (22 teeth) for a period between 3 and 36 months. Of the patients who suffered from tooth intrusion, 56.25% were male and 91% of the intruding teeth were upper central incisors. In all cases the treatment indicated was to await spontaneous re-eruption: total re-eruption occurred in 42.5% of cases, partial re-eruption in 47% of cases and in 10.5% there was no re-eruption. Twenty-three percentage of the teeth suffered necrosis, 33% suffered internal or external root resorption and none suffered root canal obliteration. Fifty-seven percentage indicated healthy pulps independent of degree of re-eruption. [source]

Prevalence of dental trauma in 5,6- and 12,14-year-old boys in Riyadh, Saudi Arabia

DENTAL TRAUMATOLOGY, Issue 4 2001
Ibrahim Al-Majed
Abstract , This study involved 354 boys aged 5,6 years and 862 boys aged 12,14 years, attending 40 schools in Riyadh. All children were examined at school by a single dental examiner, using criteria similar to those employed in the survey of children's dental health in the United Kingdom. The prevalence of dental trauma in 354 Saudi boys aged 5,6 years was 33%. The most common type of dental trauma was fracture of enamel (71%) followed by loss of tooth due to trauma (13%), fracture into enamel and dentine (7%), discolouration (5%), pulp involvement (4%). No relationship between the degree of overjet and the occurrence of dental trauma in the primary dentition was observed. The prevalence of dental trauma in 862 12,14-year-old boys was 34%. The commonest dental trauma was fracture of enamel (74%) followed by fracture into enamel and dentine (15%), fracture into enamel-dentine and pulp (5%), loss of tooth due to trauma (3%), and discolouration (0.4%). A significant relationship (P=0.02) between the increased overjet (, 6 mm) and the occurrence of dental trauma in the permanent dentition was reported. The present study found no evidence of dental care provided for traumatised primary incisors in 5,6-year-old boys. The treatment of dental trauma in 12,14-year-old boys was negligible (2.4%). The present Saudi Arabian study showed higher prevalence of dental trauma in 5,6- and 12,14-year-old boys than the reported results of the United Kingdom Children's Dental Health Survey of the same age groups. [source]

Color distribution of maxillary primary incisors in Korean children

COLOR RESEARCH & APPLICATION, Issue 2 2010
Hong-Keun Hyun
Abstract The purpose of this study was to investigate the color distribution of maxillary primary incisors measured with a colorimeter. The subjects were 100 Korean children aged 2,5 with total number of 400 teeth. A spot measurement intraoral colorimeter was used to determine the color of maxillary primary central and lateral incisors at labial central area. The CIE L*, a*, b* value of each tooth and color difference (,E) among each other were calculated and analyzed. The range of L*, a*, and b* values, regardless of the type of teeth, was 72.7,84.9, ,0.6 to 4.9, and 4.7,15.0, respectively. Mean value (SD) of L*, a*, and b* for maxillary primary incisors was 78.6 (2.3), 1.2 (0.9), and 9.6 (1.8), respectively. Boys showed more red (higher a* value) and less yellow (lower b* value) hue than girls in the central incisors (P < 0.05). Mean color difference (,E) (SD) between two values which selected from overall 400 L*, a*, b* values measured (n = 400C2) was 3.9 (1.8) with 95% confidence interval range of 3.86,3.89, and most of them were found to be present around the previously reported clinical acceptability thresholds (,E = 2.7,6.8). Because mean intraperson ,E (SD) was 3.0 (1.6) with 95% confidence interval range of 2.86,3.12, most colors among primary incisors in the same person were presumably difficult to discern by naked eye (,E < 3.7). Age influenced L* and b* values significantly, but the correlation coefficients were not high (r = ,0.182 for L* of central incisors, P < 0.01; r = 0.188 for b* of central incisors, P < 0.01; and r = 0.143 for b* of lateral incisors, P < 0.05). The present study showed somewhat higher color coordinates than the previous reports which based on primary anterior teeth in other ethnic groups. The results of this study could be used for the color modification of esthetic materials for primary teeth. © 2009 Wiley Periodicals, Inc., Col Res Appl, 2010. [source]