The vowel space reflects the right-angled shape of the vocal tract, and many consonants exploit the palatal wall. These two facts suggest the importance of the geometry of peripheral structure in speech production. In this study, the relationship between geometry and articulatory variation was examined using a database of English and Japanese speakers. The geometry of each speaker's vocal tract...

PURPOSE To evaluate vertical stability after combined orthodontic surgical treatment of skeletal anterior open-bite malocclusion. MATERIALS AND METHODS A literature search was performed to locate studies pertaining to vertical stability after combined orthodontic surgical treatment of skeletal anterior open-bite malocclusion. Data from the identified studies were extracted and assessed for qu...

OBJECTIVES To evaluate the cephalometric features of subjects with incompetent lips, and to find the most discriminant variables for lip incompetence among the following: dental protrusion and proclination, antero-posterior and vertical skeletal relationships, and lip dimensions. METHODS This retrospective study was conducted at King Abdulaziz University, Jeddah, Kingdom of Saudi Arabia, betw...

BACKGROUND Palatal rugae (PR) are asymmetrical irregular elevations, recorded during maxillary cast fabrication, that can be used for identification purpose if previous comparative sources are available. AIM This study investigated uniqueness of PR patterns in relation to gender, palatal vault forms, and ABO blood groups in three (North-East [N-E], Northern and Western) populations of India. ...

Background and purpose: Transverse problems in the maxilla (high arched- narrow hard plates) can cause respiratory disorders. Palatal expansion can be helpful in this way. The present study aimed at evaluating the effect of bone borne expansion and tooth borne palatal expansion on airway volume. Materials and methods: A review study was performed by search in Google Scholar, Scopus, PubMed, Em...

OBJECTIVE To evaluate the factors that affect torque control during anterior retraction when utilizing the C-retractor with a palatal miniplate as an exclusive source of anchorage without posterior appliances. METHODS The C-retractor was modeled using a 3-dimensional beam element (0.9-mm-diameter stainless-steel wire) attached to mesh bonding pads. Various vertical heights and 2 attachment po...

The management of facial defects has rapidly changed in the last decade. Functional and esthetic requirements have steadily increased along with the refinements of surgery. In the case of advanced atrophy or jaw defects, extensive horizontal and vertical bone augmentation is often unavoidable to enable patients to be fitted with implants. Loss of vertical alveolar bone height is the most common...

INTRODUCTION Due to the lack of studies that distinguish between dentoalveolar and basal changes caused by the Thurow appliance, this clinical study, carried out by the School of Dentistry--State University of São Paulo/Araraquara, aimed at assessing the dental and skeletal changes induced by modified Thurow appliance. METHODS The sample included an experimental group comprising 13 subjects a...

OBJECTIVE Miniscrew-assisted rapid palatal expansion (MARPE) is a means for expanding the basal bone without surgical intervention in young adults. Here, we assessed the differences in dental, alveolar, and skeletal measurements taken before (T0), immediately after (T1), and 1 year after (T2) MARPE. METHODS Twenty-four patients (mean age, 21.6 years) who had undergone MARPE and cone-beam comp...

This cephalometric study evaluated an early nonextraction treatment approach for patients with severe vertical skeletal dysplasia and maxillary transverse constriction. Thirty-eight patients, 8.2 years (+/- 1.2 years) of age, were treated for 1.3 years (+/- 0.3 years) with lip seal exercises, a bonded palatal expander appliance, and a banded lower Crozat/lip bumper. The bonded palatal expander ...