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At least 37 records · Page 2Linked to original sources
PubMed2006

Caries increment in the permanent dentition of Mexican children in relation to prior caries experience on permanent and primary dentitions.

OBJECTIVE: To evaluate the likelihood of caries increment in schoolchildren, based on their prior caries experience. MATERIAL AND METHODS: We undertook a longitudinal study in 452 six-to-nine year olds between 1999 and 2001 in Mexico, with dental exams conducted by two standardized examiners (kappa>0.85). The dependent variable was the DMFT increment, dichotomized as without increment, and at least one unit of increment. Independent variables estimated caries experience at baseline. Data were analyzed using non-parametric tests and generalized linear models (log-binomial) to calculate relative risk (RR) adjusted for age and sex. RESULTS: The percentage of caries-free children diminished by 20.5% from 1999 to 2001. DMFT index increased two-fold, from 0.25+/-0.70 in 1999 to 0.77+/-1.30 in 2001 (p<0.001). The overall risk for this sample was 24%. The DMFT increment was higher (p<0.001) in children with DMFT>0 and dmft>0 in 1999 (RR=1.89, 95% CI=1.37-2.62; RR=2.71, 95% CI=1.94-3.76, respectively). The likelihood for DMFT increment from the 1999 levels was: (1) 2.78 times higher (95% CI=2.06-3.76) if schoolchildren had caries in any of the first permanent molars and (2) 1.62 times higher (95% CI=1.20-2.19) if schoolchildren were affected by high severity caries at baseline. CONCLUSIONS: Both caries prevalence and mean DMFT had significant increments in 18 months. Dental caries in the primary (dmft) and permanent (DMFT) dentitions at baseline are goods indicators of subsequent caries development in this group of children in a medium income country. This relationship became stronger when the occurrence of caries in the first permanent molars was included.

Analysis of Variance↗
PubMed2001

[Birth weight and state of dentition in children with transitional dentition with regard to oral hygiene].

The aim of the present study was to determine the dependency between the state of dentition and the birth weight of the pupils of the third grade of primary schools in Lublin. The subjects of the examination were 150 aged 9 year and 8 months +/- 3.9 months (76 girls and 74 boys). Clinical and questionnaire tests and a statistical analysis were carried out. The obtained results and literature review seem to allow for the following conclusions: there is a relationship between the sum of dmfs and DMFs indexes and the advancement of the carious process and OHI--S--with increment of birth weight and decrement of OHI--S index the sum of dmfs and DMFs indexes decreased; there was no correlation between disturbances of teeth mineralization and the birth weight.

Birth Weight↗
PubMedDate not supplied

[From the mixed dentition to the permanent dentition: how to manage space while guiding eruption?].

In the mixed dentition, when there is a discrepancy between the bony structures and the teeth, in certain cases, serial extractions are performed in order to guide the eruption of permanent teeth and obtain a correct occlusal function. The treatment consists in the extraction of primary teeth and then of first bicuspids. The choice of the first tooth to be extracted is based upon the position of the crowns of the permanent teeth and their degree of root maturation. Then the first bicuspid is extracted as soon as or prior to its eruption. This interceptive treatment has limited indications which need to be respected in order to preserve the child's future dental health. This treatment is indicated for Class I malocclusions with severe crowding or moderate crowding associated with bi-maxillary protrusion.

Child↗
PubMed1989

[Growth and development of the dental arch and alveolar ridge in the incisal segment from the late period of mixed dentition to the early period of permanent dentition].

The purpose of this study is to provide information on normal growth and development of the dental arch and alveolar ridge. Materials were longitudinal casts obtained from 38 children (male: 19, female: 19) with normal dentition. The casts were taken at 2-month intervals for the purpose of providing information on tooth emergence. Measurements for chronological age were taken from 11 years and 6 months to 13 years and 6 months. Measurements for dental age were taken during a period of 1 year before and 1 year after emergence of the permanent second molar. In addition to these dental age measurements, other measurements for dental age were made at each evaluation of dental arch length and basal dental arch length for a period of 1 year before and 1 year after emergence of the permanent second premolar. After a reference plane had been established and each cast had been standardized, a formcorder was used to trace 5 sagittal sections at the midline and at the region of the right and left central and lateral incisors. Growth and development of dental arch length, basal arch length, and alveolar width in both the maxilla and the mandible were measured on these 5 sagittal sections. Total dental arch length was taken to be the distance between the mesial surfaces of the permanent first molars and the labial surface of each incisor. Total basal arch length was taken to be the distance between the ridge of the posterior region of the basal arch and the most concave point of the labial basal arch. In addition to casts, lateral cephalometric films were used to measure, at ages 12, 13 and 14, changes in the vertical and horizontal dimensions of both the central incisors and the jaws and the long axes of the permanent central incisors. Results and conclusions 1. Mean growth in dental arch length 1) In the maxilla When growth was evaluated by chronological age, in 2 years, the total dental arch length decreased 1.0-1.2 mm in the region of the central incisors and 0.8-0.9 mm in the region of the lateral incisors. Evaluated by dental age based on the emergence of the permanent maxillary second premolar, up to 2 months before the emergence of that tooth, no notable changes occurred in the total dental arch length in the regions of both the central and lateral incisors. But a remarkable decrease of 0.9-1.1 mm took place thereafter.(ABSTRACT TRUNCATED AT 400 WORDS)

Alveolar Process↗
PubMed1998

Evolution of the dentition in prehistoric Ohio Valley Native Americans: II. Morphology of the deciduous dentition.

In order to evaluate the microevolutionary dynamics of morphological features of the deciduous dentition, I collected data on the variation of 57 features (33 crown and 24 root) from prehistoric Ohio Valley populations. I sampled a total of 370 individuals from 26 populations representing a lineage that inhabited the middle and upper Ohio valley region from approximately 3000 to 350 BP. Evolutionary changes in the frequencies of morphological features of the deciduous teeth in this lineage were limited. Over 80% of the features show no significant differences among the populations. The relatively few features that show consistent differences separate pre- and postmaize agricultural populations. I discuss explanations for this change in terms of selection differences or gene flow. The general pattern of morphological trait expression in the deciduous teeth of this Ohio Valley lineage corresponds to what has been termed the Mongoloid dental complex (sinodonty in the permanent teeth). I suggest additional features that, with further study, may be added to this morphological complex.

Biological Evolution↗
PubMed1990

[The early treatment of progenia in the deciduous dentition compared to treatment in the mixed dentition].

The aim of this research was to examine the effect of the chin cap on mandibular prognathism (Angle class III) with or without a Fränkel appliance. 30 class III patients were examined. Head plates and casts made before and after active treatment were evaluated. The patients were divided into group I (initial X-ray incisivi decidui ID) and group II (initial X-ray incisivi permanentes IP). Group I (ID) showed a stronger skeletal response. Group II (IP) already showed more severe prognathic values in the initial X-rays. In group I (ID) a decrease of the gonial angle, SNB- and SNPog angle as well as an increase of both the ANB- and articulare angle were observed, however not in group II (IP) or at least not to the same extend. Overbite and overjet values reached the ideal values. In both groups dental compensation was observed.

Activator Appliances↗
PubMed2006

Severe trauma in the primary dentition--diagnosis and treatment of sequelae in permanent dentition.

A 2-year 6-month male presented after an intrusive injury sustained at 15 months of age. Intra-oral radiographs showed coronal dilaceration of the germ of the permanent central incisor and the presence of a calcified tissue mass in the area of the trauma which was identified after surgical removal as the permanent upper left lateral incisor. Immediate treatment and long-term options are discussed.

Child, Preschool↗
PubMed1999

Comprehensive treatment commenced in the mixed dentition and completed in the permanent dentition: an "early treatment" malocclusion.

The management of a ten-year-old female with an Angle Class II division 1 malocclusion is followed for nearly ten years, through active treatment, until follow-up some years later. Note is made of: the duration of the overall active treatment period; the need for considerable patient cooperation; the fact that the lower incisors did not move forward on their underlying bone while still moving forward in relation to the APo line; and the fact that, in this instance, the third molars were chosen as appropriate teeth for extraction.

Child↗