RESUMEN
AIM OF THE STUDY: Need for our study was to evaluate a comparison between canal preparation ability of nickel-titanium (NiTi) hand files with step-back manual technique, of NiTi files installed on a reciprocating hand piece and of Wave-One files utilizing noninvasive cone-beam computed tomography (CBCT) technique. MATERIALS AND METHODS: Thirty extracted intact single-rooted human mandibular premolars were used in the study, segregated in three sets of 10 specimens each, where canal instrumentation was done by different methods using NiTi in step-back technique, using reciprocating hand piece with NiTi files and using primary file with the use of Wave-One reciprocating system. Later, evaluation of centering ability was conducted using the references through CBCT images. RESULTS: Hand NiTi files showed even less canal centering ability as compared to other two sets. Mesiodistal diameter at 9 mm length of the prepared canal was 1.06 and later was 0.98, which shows excessive preparation in case of Set I versus Set II. In case of comparison between Set III and Set I, mesiodistal diameter at 9 mm length of the prepared canal was 0.99, and later was 1.06, depicting better canal shaping ability with Wave-One file. CONCLUSION: The use of hand NiTi files installed on a reciprocating hand piece would be economically beneficial producing the similar results as that of wave one without any deviation from the original canal anatomy.
RESUMEN
Erythoderma first described by Hebra in 1868 is a reaction pattern, characterised by generalised and confluent erythema with desquamation affecting more than 90% of body surface and is usually accompanied by systemic manifestation including some metabolic changes. Tile study was envisaged to assess their profile of aetiology, clinical features and to correlate with histopathological findings. Twenty-four patients (18 males and 6 females) with erythroderma were considered for the study. All patients were hospitalised, detailed history was taken and were subjected to relevant investigations--haemogram, serum proteins, liver and renal function tests, routine and microscopic urine tests, HIV screening, x-ray chest, ultrasound abdomen, FNAC of enlarged lymph nodes and skin biopsy. The age group affected ranged between 7 and 70 years, peak incidence between 50 and 60 years. The male to female ratio was 3:1. Scaling, erythema and pruritus were predominant clinical manifestations. In 12 clinically suspected psoriatic erythroderma, only in 6 cases the histopathological features were correlated to psoriasis and remaining showed non-specific chronic dermatitis. Two patients were found to be HIV-positive. There is good clinicopathological correlation in erythroderma caused by lichen planus, atopic dermatitis, seborroeic dermatitis, non-bullous congenital ichthyosiform erythroderma. Drugs were found to be aetiological factor in 3 cases. The study was conducted to assess variations in clinical, aetiological and histopathological profile of erythroderma. The present series had high percentage of erythroderma secondary to preexisting dermatoses. The onset of disease was insidious except in drug-induced erythroderma where it was acute.
Asunto(s)
Dermatitis Exfoliativa/etiología , Dermatitis Exfoliativa/patología , Adolescente , Adulto , Anciano , Niño , Estudios de Cohortes , Dermatitis Exfoliativa/terapia , Femenino , Humanos , India , Masculino , Persona de Mediana Edad , Factores de Riesgo , Adulto JovenRESUMEN
An immunological study was carried out on 58 children below 14 years of age with sensorineural hearing loss of unknown aetiology. The observed elevated levels of IgE in 25.86% (n = 15) children and antinuclear antibodies in 10.34% (n = 6) children indicate that auto-immune activity has a role in the causation of hearing impairment.