several appliances have been used for palatal expansion for treatment of posterior cross bite. the purpose of this study was to evaluate the stress induced in the apical and crestal alveolar bone and the pattern of tooth displacement following expansion via removable expansion plates or fixed-banded palatal expander using the finite element method (fem) analysis.two 3d fem models were designed ...

AIM To evaluate retention of complete denture base with different types of posterior palatal seals. MATERIAL AND METHODS Ten male patients between the age group of 50 years to 60 years were selected for the study. After the primary and secondary impressions were taken, five casts were made including a cast without posterior palatal seal, a cast with single bead posterior palatal seal, a cast ...

background : this study evaluated the sensation of palatal ucosa before and after le fort i osteotomy and compared it based on whether greater palatine nerve has been dissected or not. methods : sixteen patients were studied within one week before  urgery and then one week, 6 weeks, 3 months and 6 months after surgery. four tests including sharp-blunt discrimination, cold perception, pin prick ...

OBJECTIVES The aim of this preliminary study was to assess the nature of associations between selected dentofacial morphological variables and respiratory mode as measured by percent nasality (%N) as part of an ongoing longitudinal study. DESIGN Cross-sectional cohort study. SETTING AND SAMPLE POPULATION The Pediatric Clinical Study Center, Children's Hospital, Columbus, OH. Ninety-eight no...

The transpalatal arch might be one of the most common intraoral auxiliary fixed appliances used in orthodontics in order to provide dental anchorage. The aim of the present case report is to describe a case in which an adult patient with a tendency to class III, palatal compression, and bilateral posterior crossbite was treated with double transpalatal bars in order to control the torque of bot...

OBJECTIVE The aim of this study was to identify the procedures adopted by Brazilian orthodontists in the following situations: extraction space closure, anchorage control in case of necessary anchorage for group A and frequency of skeletal anchorage use, especially in the upper jaw. METHODS A questionnaire was sent to the e-mail address of all dentists registered in the Brazilian Federal Coun...

ment can be particularly challenging in adult patients. Although many appliances have been proposed for maxillary molar distalization in such cases,1,2 they generally require some degree of patient compliance, and their de sign causes anchorage loss due to the incorporation of occlusal rests or bands on the premolars. The introduction of skeletal anchorage has radically changed orthodontists’ a...

Dento-alveolar traumas are one of the most frequent injuries to teeth, mainly affecting the upper incisors due to their exposed position in the dental arch. In such cases, esthetics, function and phonetics of anterior teeth may be compromised. Furthermore, when there is involvement of the biological width, there is often a poor prognosis. This case report describes the multidisciplinary approac...

Orthodontic tooth movement involves application of forces and moments on the dentition. Every force applied on a tooth or group of teeth will generate reactive forces on adjacent structures. Some reactive forces will produce secondary effects that must be controlled. Historically, these reactive forces were dissipated by different strategies. One strategy uses a group of teeth as anchorage in o...