Orthodontic Research Today is a free monthly online journal that collates and summarizes the latest research about Orthodontic, including details on braces, retainers, treatment.

Application of Calcium Sulfate in Surgical-Orthodontic Treatment of Impacted Teeth: A New Procedure to Control Hemostasis.

Scarano A, Carinci F, Cimorelli E, Quaranta M, Piattelli A

Researcher, Dental School, University of Chieti-Pescara, Chieti, Italy.

PURPOSE: Calcium sulfate (CaS) is a simple, biocompatible material with a very long, safe clinical history in several different fields of medicine. CaS is a rapidly resorbing material that leaves behind a calcium phosphate lattice, which promotes bone regeneration and hemostasis. The aim of this study was to perform a clinical evaluation of a possible hemostatic effect of calcium sulfate hemihydrate (CaSO(4)), commonly known as plaster of Paris, in the surgical and orthodontic treatment of impacted teeth. MATERIALS AND METHODS: Forty-three patients with 66 impacted cuspids and premolars were enrolled in this study. The gap between teeth and bone was filled with several layers of CaS cement. Each layer was put in place and was compressed with a dry gauze. The outer layer was then hardened with a potassium sulfate solution. After hardening, the CaS excess was removed, and a bracket was applied to the surface of the tooth. RESULTS: In no case was a separation of the bracket by the surface of the tooth observed. CONCLUSIONS: These results seem to confirm the usefulness of the hemostatic effect of CaS in this procedure.

Published 12 March 2010 in J Oral Maxillofac Surg.
Full-text of this article is available online (may require subscription).

Articles on Orthodontic published 10 March 2010:

Association of Aesthetic and Orthodontic Treatment in Parry-Romberg Syndrome.   J Craniofac Surg.

Parry-Romberg syndrome (PRS) is an uncommon degenerative condition characterized by a slow, progressive, and, generally, unilateral atrophy of facial tissues, including muscles, bones and skin. Ophthalmological and neurological manifestations have frequently been observed and few oral changes have been reported. This article reports a case of PRS in a 22-year-old woman, exhibiting facial asymmetry, hypoplasia of the right side of the face, areas of skin hyperpigmentation, and oral alterations, ... [Abstract] [Full-text]

Articles on Orthodontic published 5 March 2010:

The relationship between idiopathic bone cavity and orthodontic tooth movement: analysis of 44 cases.   Dentomaxillofac Radiol, 39(3): 162-6.

Objectives: Idiopathic bone cavity (IBC), also named simple or traumatic bone cyst, is a common lesion of unknown cause. The mandible is a very common location, although it may occur in any bone of the body. The authors performed a retrospective analysis of 44 cases in order to assess the causation of this entity. Methods: Each case was analysed by two of the authors (IV and SM) for medical and dental history, history of mandibular/maxillary trauma, clinical presentation, radiographic ... [Abstract] [Full-text]

The orthodontic-periodontic interrelationship in integrated treatment challenges: a systematic review.   J Oral Rehabil.

Summary Orthodontic treatment aims at providing an acceptable functional and aesthetic occlusion with appropriate tooth movements. These movements are strongly related to interactions of teeth with their supportive periodontal tissues. In recent years, because of the increased number of adult patients seeking orthodontic treatment, orthodontists frequently face patients with periodontal problems. Aesthetic considerations, like uneven gingival margins or functional problems resulting from ... [Abstract] [Full-text]

Articles on Orthodontic published 3 March 2010:

Combined maxillary and mandibular midline and mandibular ramus distraction osteogenesis for treatment of a Class II patient with implants as orthodontic anchorage.   Am J Orthod Dentofacial Orthop, 137(3): 412-23.

This case report describes the treatment of a woman with severe mandibular retrusion and maxillomandibular transverse deficiency. Her malocclusion was characterized by a large overjet, a deep overbite, and a V-shaped dental arch, and she had a skeletal Class II profile. Treatement included combined maxillary and mandibular midline expansion, maxillary downward repositioning, and mandibular ramus lengthening with distraction osteogenesis with implants as orthodontic anchorage. During the ... [Abstract] [Full-text]

Severe root resorption in orthodontic patients treated with the edgewise method: prevalence and predictive factors.   Am J Orthod Dentofacial Orthop, 137(3): 384-8.

INTRODUCTION: Our aims in this study were to assess the prevalence of severe root resorption and identify possible associations in orthodontic patients treated with the edgewise method. METHODS: The sample included 1049 patients who had periapical radiographs taken for all incisors before and after treatment. The radiographs were examined by 2 orthodontists using an x-ray viewer with standard light intensity. These variables were collected: root shape, overbite, initial resorption, and ... [Abstract] [Full-text]

In-vitro assessment of temperature rise in the pulp during orthodontic bonding.   Am J Orthod Dentofacial Orthop, 137(3): 379-83.

INTRODUCTION: In this in-vitro study, we evaluated the temperature changes in the pulp chamber during bracket bonding using 4 different light sources. METHODS: Eighty intact extracted maxillary central incisors were used. The teeth were divided into 4 groups of 20 teeth each. Brackets (Mini Twin, Dentaurum, Ispringen, Germany) were bonded with Transbond XT (3M Unitek, Monrovia, Calif) adhesive and light cured with low-intensity halogen light for 40 seconds, high-intensity halogen light for 40 ... [Abstract] [Full-text]

Surface roughness of the restored enamel after orthodontic treatment.   Am J Orthod Dentofacial Orthop, 137(3): 368-74.

INTRODUCTION: After fixed appliance treatment, one concern is to restore the enamel surface as closely to its original state as possible. A variety of cleanup processes are available, but all are time-consuming and carry some risk of enamel damage. The purpose of this study was to examine tooth surfaces restored with different cleanup protocols. METHODS: Ninety-nine premolars extracted for orthodontic purposes were used. The 2 materials tested were Sof-Lex disks (3 M ESPE AG, Seefeld, Germany) ... [Abstract] [Full-text]

Relationship between orthodontic expertise and perception of treatment needs for maxillary protrusion: comparison of dental students, residents, and orthodontists.   Am J Orthod Dentofacial Orthop, 137(3): 340-5.

INTRODUCTION: The aims of this study were to assess the peer assessment rating (PAR) index in relation to perceived treatment needs for maxillary protrusion in Japanese subjects and to investigate how perceived orthodontic treatment needs change with increased experience in dentistry and orthodontics. METHODS: The subjects were 155 persons (73 men, 82 women; mean age, 24.2 years; SD, 4.7 years) including dental students, residents, and orthodontists. We showed them casts from 10 patients with ... [Abstract] [Full-text]

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