Nasal breathing is the first physiological function developed at birth. Responsible for the process of air conditioning, warming, humidification and filtering, it also serves as protection for respiratory tract. Moreover it has effects on development and determination of dentofacial morphology. The adenoid is a hypertrophied lymphoepithelial tissue that comprises part of Waldeyer’s pharyngeal ring and plays an important role in the immune system. This article mainly focuses on etiology and factors affecting malocclusion in adenoid facies and a case report.
The lingual arch has proved its efficacy for holding the molars. In combination with a soldered extended free arm in the second premolar region it can also offer space maintenance.
The cephalometric evaluation of craniofacial morphology forms an important tool in orthodontic diagnosis and treatment planning especially in planning the treatment outcome. Evaluation of the facial soft tissue features is important to set the orthodontic treatment goals to Nepalese standard of facial esthetics as no such study exists in the indexed literature.
Orthodontic appliances should be designed to satisfy goals for patient, and doctor. An appliance that is able to achieve these goals more closely approaches the ideal treatment system. Analysis of appliances of the Begg and straightwire types indicates that each treatment system has significant advantages and that the advantages of one system frequently are the disadvantages of the other.
In orthodontic practice, it is essential to achieve proper adhesion between the bracket and the tooth enamel. The success of the adhesion depends on the tooth surface and its preparation, the design of the bracket base and the cementing material2. The irregularities in the enamel surface caused by dental fluorosis may influence the adhesion of brackets, leading to reports of a decrease in bond strength of brackets on teeth with fluorosis3,4. The reason for this is that fluorosis is associated with hypomineralization of the superficial enamel layer, making it acid resistant, and thus reducing the effectiveness of the acid etching required to achieve adequate adhesion.
Oligodontia (multiple aplasias) is defined as a congenital absence of 6 or more teeth. Oligodontia along with impacted teeth is a rare condition. Oligodontia can occur either as an isolated condition (non-syndromic oligodontia) or it can be associated with cleft lip\palate and other genetic syndromes (syndromic oligodontia). The exact etiology of Oligodontia is unknown; several factors like trauma, radiation, infection, metabolic disorders and idiopathic conditions are the possible etiologic factors. This report describes a case of multiple agenesis of permanent teeth along with impacted teeth.
The incidence of allergies in general is on the increase. An allergic reaction can also occur during any dental and orthodontic treatment. However, the allergic potential of orthodontic appliances is frequently overestimated. Nickel is the most common metal to cause contact dermatitis in orthodontics.
Correct alignment of teeth is a fundamental goal of orthodontic treatment. The accurate assessment of dental crowding and the space required to alleviate it is critical for correct orthodontic diagnosis and treatment planning.
A Comparison of Shear Bond Strength and Debonded Surface Characteristics of Three Orthodontic Bonding Resin Adhesive System- An In-Vitro Study
Bond failure is often attributed to moisture contamination. To overcome this commonly encountered problem, materials have been developed that are hydrophilic and that are believed to offer better bond strength in moisture-contaminated environment.