Oral findings in a case of Noonan syndrome in an 8-year-old Japanese male are reported. Examination of the patient revealed a narrow, high-arched palate and an anterior open bite. Cephalometric measurements showed a wide gonial angle, a large mandibular plane angle, a large Y-axis and long facial height. It is suggested that the patient had a skeletal open-bite malocclusion, which included an a...

INTRODUCTION Becker muscular dystrophy is an X-chromosomal linked anomaly characterized by progressive muscle wear and weakness. This case report shows the orthodontic treatment of a Becker muscular dystrophy patient with unilateral open bite. METHODS To correct patient's malocclusion, general anesthesia and orthognathic surgery were not considered as an option. Conventional orthodontic treat...

The evolution of ecomorphs within a species may represent either unique evolutionary events or multiple convergent events in similar environments. Functional studies of differing morphological traits of ecomorphs have been important to elucidate their role in adaptive radiations. The Cape dwarf chameleon, Bradypodion pumilum, has two ecomorphs: a large, brightly colored, ornate form found in cl...

It has recently been reported that long-standing post-traumatic open bite can be successfully corrected with botulinum toxin type A (BTX-A) injection into the anterior belly of the digastric muscle (ABDM). The report documented an individual with bilaterally symmetrical and otherwise unremarkable anterior digastric musculature. However, the existence of variant anterior digastric musculature is...

The present study attempts to evaluate cephalometrically the effects of Fränkel's function regulator (FR-4) appliance on the treatment of Angle Class I skeletal anterior open bite malocclusion. Forty Turkish children (26 girls and 14 boys), with Angle Class I skeletal anterior open bite, were randomly divided into two groups of 20 (13 girls and 7 boys). Patients who had not undergone treatment ...

There is still controversy regarding the efficacy of functional appliances when treating malocclusion at an early age. Although a good outcome from treatment is important, the stability of the results over time becomes a major concern. This paper presents the results of three open bite cases treated with the Bimler type-A appliance in the mixed dentition. The open bite cases presented here demo...

A 16-year-old girl with an anterior open bite was treated with nonextraction therapy that included intrusion of the maxillary and mandibular posterior teeth with microscrew implants. Implants (diameter, 1.2 mm; length, 8 or 6 mm) were placed into alveolar bone near the posterior teeth and used as anchorage for intrusive force. To prevent adverse side effects of buccoversion or linguoversion of ...

The title compound, [Cr(C(28)H(32)OP(2)Si(2))(CO)(4)], was obtained by the ligand-exchange reaction of Cr(CO)(6) with (Ph(2)PSiMe(2))(2)O in refluxing toluene. The CrC(4)P(2) coordination geometry is distorted octa-hedral, with a P-Cr-P bite angle of 99.22 (4)°.

Many reports have paid attention to skeletal stability after orthognathic surgery, but only few focalize attention on patients with III class III malocclusion and open bite. In this article, long-term stability (2 yr) of the maxilla and the mandible after orthognathic surgery in 40 patients with class III malocclusion and anterior open bite is evaluated. The sample has been obtained from those ...