Evaluation of Displacement with Rapid Maxillary Expansion, Miniscrew-Assisted Rapid Maxillary Expansion, and Miniscrew-Assisted Rapid Maxillary Expansion Combined with Micro-Osteoperforations: A Comparative Finite Element Analysis.

Background And Objectives: Maxillary expansion is one of the most commonly advocated treatment approaches for the management of the maxillary deficiency in the transverse plane and is possible because of the presence of mid-palatal suture. This finite element method (FEM) study was taken to evaluate the stress pattern and displacement in the screw and its adjacent structures used in three different treatment modalities, such as rapid maxillary expansion (RME), mini-implant-assisted rapid palatal expansion (MARPE), and MARPE in conjunction with micro-osteoperforations.

Materials And Methods: An adult human dried skull, cone-beam computed tomography (CBCT) of the skull, and FEM and associated software (GEOMAGIC) were included.

Non-extraction treatment of severe crowding with pendulum appliance.

An extraction case was planned for non-extraction treatment using pendulum appliance and the effect of appliance was evaluated in a 14-year-old girl with a severe maxillary and mandibular crowding followed by non-extraction fixed appliance preadjusted edgewise appliance mechanotherapy. Total treatment time was for 22 months. The obtuse nasolabial angle was maintained intact.

Comparative study of palatal rugae pattern in class II div 1 and class I individuals.

Aims: To determine if the palatal rugae have a characteristic pattern in untreated class II div 1 malocclusions compared to normal class I occlusions, and to provide a valuable insight whether palatal rugae can be taken up as additional criteria for classifying malocclusions.

Materials And Methods: The study was conducted on initial maxillary dental casts of 24 individuals with untreated class II div 1 malocclusion with an overjet of minimum of 5mm, of whom 12 were females and 12 were males, with age ranging from 16 to 24 years and compared with Class I patients casts.

Results: There was no statistically significant difference in the mean intermolar widths of the two groups.

Impacted canines: Etiology, diagnosis, and orthodontic management.

Impaction of maxillary and mandibular canines is a frequently encountered clinical problem, the treatment of which usually requires an interdisciplinary approach. Surgical exposure of the impacted tooth and the complex orthodontic mechanisms that are applied to align the tooth into the arch may lead to varying amounts of damage to the supporting structures of the tooth, not to mention the long treatment duration and the financial burden to the patient. Hence, it seems worthwhile to focus on the means of early diagnosis and interception of this clinical situation.