BACKGROUND Cleft lip and/or palate is the most frequent congenital abnormality occurring in the craniofacial region and is often associated with numerous dental defects such as tooth agenesis, supernumerary teeth, microdontia, taurodontism, crown malformations, or delay in eruption. The prevalence of hypodontia in cleft-affected patients is much higher in comparison with a healthy population. T...

INTRODUCTION The aim of this prospective study was to use cone-beam computed tomography to assess the dimensional changes of the upper airway in orthodontic patients with maxillary constriction treated by rapid maxillary expansion. METHODS Fourteen orthodontic patients (mean age, 12.9 years; range, 9.7-16 years) were recruited. The patients with posterior crossbite and constricted maxilla wer...

objective: knowledge about the internal anatomy of the root canal and apical foramen is a critical prerequisite for root canal therapy and is necessary for the success of endodontic treatment. this study aimed to determine the distance of apical foramen from the anatomical apex and apical constriction, evaluate the deviation of apical foramen from the anatomical apex and specify the most common...

Two series of spiro[ [1]benzothiophene-3,2'-[1,3]thiazolidine]-2,4'-diones 5a-e and 6a-e were synthesized, characterized and evaluated for anticonvulsant activity. Reaction of [1]benzothiophene-2,3-dione (3) with certain arylamines afforded the corresponding Schiff bases 4a-e. Cyclization of 4a-e with thioglycolic or thiolactic acids brought about the target spiro compounds 5a-e and 6a-e respec...

Adriana L. Brachet-Cota and Gerardo Burton* Departamento de Qirimica Orgänica, Facultad de Cieneias Exaetas y Naturales, Universidad de Buenos Aires, Pabellön 2, Ciudad Universitaria, 1428 Buenos Aires, Argentina Z. Naturforsch. 43b, 491-495 (1988); received November 2, 1987 6/3-Hydroxypregnanes, Mercuric Oxide, Oxidation, /3-Fragmentation. Hypoiodite Reaction Oxidation of 6/3-hydroxyprogestero...

By using FMN enriched in (13)C (90%) at position C-4a, we have conclusively shown that the reaction of molecular oxygen with bacterial luciferase-bound FMNH(2) forms an adduct at the 4a position. Consistent with this are (13)C NMR studies of FMN and other flavin compounds which show that this carbon should be unusually reactive in the reduced 1,5-dihydroflavins with respect to electrophilic att...

In this paper, we construct odd unimodular lattices in dimensions n = 36, 37 having minimum norm 3 and 4s = n − 16, where s is the minimum norm of the shadow. We also construct odd unimodular lattices in dimensions n = 41, 43, 44 having minimum norm 4 and 4s = n− 24.

Two types of gammaG4 proteins, termed 4a and 4b, were characterized through antigenic studies of myeloma proteins. Both were recognized by specific antigens on the Fc fragment which were shared with other gammaG classes. The distinctive antigen of the common 4a type was shared with all gammaG1 and gammaG3 proteins but missing in those of the gammaG2 class; that for the rarer 4b type was selecti...

We recently demonstrated that automatic attention favors the right side of space and, in the present study, we investigated whether voluntary attention also favors this side. Six reaction time experiments were conducted. In each experiment, 12 new 18-25-year-old male right-handed individuals were tested. In Experiments 1, 2, 3 (a, b) and 4 (a, b), tasks with increasing attentional demands were ...

Several 6-aryl-4-substituted benzylidene/furfurylidene pyridazin(2H)-3-one derivatives (4a-f) were synthesized and evaluated as analgesic and anti-inflammatory agents in mice and rats, respectively. All compounds were tested by using Eddy’s hot plate and the carrageenan-induced hind paw oedema method for the evaluation of analgesic and anti-inflammatory activities, respectively. Results showed ...