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Biomedical subjects

A Chosack

Publications and source records attributed to A Chosack.

At least 37 records · Page 2Linked to original sources
PubMed1979

Amelogenesis imperfecta among Israeli Jews and the description of a new type of local hypoplastic autosomal recessive amelogenesis imperfecta.

Amelogenesis imperfecta (AI) was detected in nine of 70,359 school children surveyed, a prevalence approximating 1:8,000. Of these cases, eight were the hypoplastic type and one the snow-capped hypomaturation type. Family studies demonstrated that hypoplastic AI was an autosomal dominant trait in two children and an autosomal recessive in six. Of three additional families referred to our clinic, two had autosomal recessive hypoplastic AI and one the hypocalcified type, inherited as an autosomal dominant trait. In four families, a new type of local hypoplastic autosomal recessive AI was observed, characterized by horizontal pitting and grooving more pronounced in the middle third of the crowns of most teeth in both dentitions.

Adolescent↗
PubMed1979

The prognosis of traumatized permanent anterior teeth with fracture of the enamel and dentin.

The purpose of this study was to examine, in the light of a 2-year follow-up, the diagnostic and prognostic value of vitality tests in teeth which had suffered fracture of the enamel and dentin without pulp exposure, to assess the period in which late pathologic changes may occur, and to determine the recommended time intervals for follow-up examinations. Eighty-four childred, 6 to 14 years of age, with 123 traumatized teeth were included in the study. Of these teeth, 87 percent were "vital" at the initial examination, and most of these remained vital throughout the 2 years. Most pathologic changes occur within 6 months after trauma. It is recommended that follow-up examinations be performed 3 and 6 months after the trauma. Root canal treatment is usually necessary in teeth which have no vital response by the 3- and 6-month examinations.

Adolescent↗
PubMed1978

Evaluation of quandrant dentistry in provision of dental care.

The chairtime required for a single Class I or Class II amalgam restoration at 163 sittings was compared with the chairtime required for 99 cases in which two restorations in a quandrant were treated at the same sitting. The "Quadrant Dentistry Efficiency Rate" was calculated and it was found that quadrant dentistry resulted in a saving of between 30% and 50% of chairtime. The individual speed of the three dentists treating the children did not greatly influence the percentage of chairtime saved.

Child↗
PubMed1978

Cleft uvula: prevalence and genetics.

The prevalence of cleft uvula (CU) was determined among 70,359 school children 6-18 years of age; 90 children having the condition were chosen as probands for a family study. Prevalence of CU was 0.44 per cent with no sex differences. The Non-Ashkenazi group had a higher prevalence than the other population groups. The prevalence of CU in parents and siblings was 7.7 per cent and 7.5 per cent respectively. The findings from the family study support the hypothesis of a polygenic mode of inheritance for CU. The prevalence of cleft palate and agenesis of upper lateral incisors in the families studied did not differ from that expected in the general population.

Adolescent↗
PubMed1976

Scrotal tongue and geographic tongue: polygenic and associated traits.

The familial nature of scrotal and geographic tongue was investigated in parents and siblings of 156 probands having these conditions. The prevalence in parents and siblings was significantly higher than that in the control populations. The prevalence in sibilings from families in which at least one parent was also affected was significantly higher than that in siblings from families in which neither parent was affected. The prevalence of scrotal tongue alone in siblins was similar irrespective of the condition in the proband. The prevalence of geographic tongue alone was highest in siblins of probands having only geographic tongue. A polygenic mode of inheritance with some genes common to both conditions is suggested.

Adolescent↗
PubMed1976

Chairtime needed for an incremental dental care program for schoolchildren in Israel.

Chairtime needed to provide initial treatment to 80 children, 6 1/2 to 7 1/2 years of age, in an incremental care program was recorded. An average of 8.2 carious teeth with 14.0 carous surfaces required treatment. The clinical and radiographic examinations were concluded earlier and were not included in the chairtime recorded. One year after completion of the initial treatment, 51 of these children were reexamined to determine the maintenance treatment needs. These were found to be approximately one-third of the initial treatment needs. The average chairtime required for initial treatment was 2 hours and 37 min. It was estimated that for complete treatment, including examination and preventive measures, 3 hours per child would be required for initial treatment and 1 hour for maintenance care each following year.

Child↗
PubMedDate not supplied

Hypodontia: a polygenic trait--a family study among Israeli Jews.

A high prevalence of hypodontia was detected among 820 first degree relatives of 305 probands and there was an increased risk if a second family member was affected. Hypodontia is a common trait in the population, and a deviation from normal sex ratio was observed in those affected. These results suggest a polygenic mode of inheritance.

Adolescent↗
PubMedDate not supplied

The effect of metoclopramide and hydroxyzine in sedation of infants undergoing dental treatment.

The purpose of the present study was to determine whether the administration of 5 mg of the anti-emetic drug metoclopramide (MTP) would improve the effectiveness of 3.7 mg/kg of hydroxyzine (HYZ) in dental treatment of young patients. Thirty uncooperative children, with a mean age of twenty-nine months, and needing at least two restorative visits, participated in this study. The patients were assigned randomly to receive either 3.7 mg/kg HYZ or the same drug in conjunction with MTP; alternate regimens were administered at the two appointments. All the children received 50 percent nitrous oxide, and were restrained in a Papoose Board with a head holder. The following parameters were evaluated at baseline (before initiation of treatment), and at five-minute intervals throughout the procedure: degree of alertness, crying and movement. Evaluation of the overall behavior at each session was performed by one investigator, who was blind to the drug regimen the child had received, utilizing a separate rating scale. The results were submitted to statistical analysis. No differences were observed in the behavior of the children receiving both regimens. Successful sedation, as assessed by lack or minimal crying and/or movement was observed in all the treatment visits, with both regimens (mean score 4.4 for HYZ + MTP and 4.6 for HYZ). In the few occasions, however, where the restorative sessions were longer (45 to 60 minutes), more children fell asleep after receiving protocol A (pramin + hydroxyzine), suggesting a possible trend to improve effectiveness in these situations. No adverse effects were observed, and all the treatments were successfully completed. Although no significant differences could be observed in treatments lasting up to a half hour, the addition of MTP could help in sedations lasting longer than a half hour.

Anesthesia, Dental↗
PubMedDate not supplied

Marginal leakage of impregnated Class 2 composites in primary molars: an in vivo study.

In vivo impregnation of the cervical margin was used in an attempt to prevent leakage of class 2 composite restorations in primary molars. Examination after 18 months demonstrated clinical success of the restorations. However, the exfoliated teeth presented extensive dye penetration at the approximal margins of the restorations, suggesting that impregnation did not prevent marginal leakage.

Bisphenol A-Glycidyl Methacrylate↗