Genetic and dental study in patients with ectodermal dysplasia

Thirteen patients suffering from ectodermal dysplasia presented to the Pediatric Dentistry Department for dental rehabilitation. They were subjected to clinical genetic examination, pedigree construction, dental clinical and radiographic evaluation and dermatoglyphic study. Different modes of inheritance were evident in this study including autosomal dominant, autosomal recessive and X-linked inheritance. Rapp Hodgkin and ectrodactyly clefting syndrome [both associated with ED] were found among the group. Dental clinical examination and panoramic X-ray films revealed a mean of 12.8 missing teeth in the ED group. Upper central incisors, canines and first molars were the most stable tooth types. Asymmetry in absent teeth was present in all tooth types. Dermatoglyphic study in ED patients showed a wide variation when compared with a normal group of individuals. Almost all the parameters studied recorded a significant difference

Comparison of elctrosurgery and formocresol as pulpotomy techniques in primary teeth

This study was carried out to evaluate and compare electrosurgery to formocresol pulpotomy technique in primary teeth. Forty-five primary molar teeth requiring pulpotomies in 30 children, aged 4-6 years, were selected. The teeth were divided into three groups: Group I [15 teeth received formocresol pulpotomy], group II [15 teeth received electrosurgical pulpotomy [mechanical amputation of the coronal pulp and coagulation at the amputation site]], and group III [15 teeth received electrosurgical pulpotomy [cutting of coronal pulp and coagulation at the amputation site was achieved with electrosurgery]]. The teeth were clinically and radiographically evaluated at 1, 2, 6, and 12 months postoperatively. The pulp response of the pulpotomy techniques was also, evaluated histologically in six carious primary molars planned for serial extraction after eight weeks postoperatively. After 12 months, clinical and radiographic success, as defined by absence of symptoms and signs, was 93.3% in group III. There was no significant difference between them. Histologically, the results indicated that formocresol pulpotomy and electrosurgical pulpotomy [group II] showed favorable tissue response, while in group III, inflammation and internal resorption was observed

Local and systemic assessment of LL-2 in children [9-14 years old] with severely inflamed gingiva

Measuring of interleukin-2 [IL-2] in gingival tissue and culture supernatants from children with gingival specimens were assayed for its presence. Ten gingival specimens from 10 patients and five blood supernatant samples assayed for presence of IL-1 IL-2 were significantly elevated in culture supernatants as well as tissue in comparison to normal [control] specimens. These results provided an evidence for the activation of immune cells in gingivitis, and suggested the role for IL-2 in the pathogenesis of the disease in children

effect of photoperiod of diapause induction in aedes caspius pallas [Diptera: culicidae]

The effect of various artificially produced photoperiods on diapause induction in Aedes caspius Pallas was studied in the laboratory. Fourth stage larvae from eggs embryonated and hatched under insectary condition of 27-30°C and 60-80% R.H. could not be induced to diapause by temperature of 30 °C and different photoperiod treatments. The incidence of diapause was produced when both the entire parental generation and embryonating eggs of F[1] generation were exposed to short daily [10 hr] photophase

Effect of juvenile hormone analogues on aedes caspius pallas [Diptera: culicidae]

Two juvenile hormone analogues, Benzene, l-[[6,10-dimethyl-4,9-undecadienyl] oxy]-2,3,5-trimethyl-, [Z] and 9-Ethoxy-5,9-dimethyl-l-[[3,4-methylenedioxy]] phenoxy-3-decene, were evaluated for the control of Aedes caspius Pallas. These 2 juvenile hormone analogues were tested against early 4th instar larvae and newly formed pupae under constant temperature of 30 °C and 100% R.H. A. caspius Pallas larvae exposed for short as well as for long period to JHAs throughout the 4th instar show high percent mortality whether in presence or absence of food. Pupae showed no adverse effects in response to treatment