The vertical dimension of the face, or facial height, is one of the more esoteric concepts in dentistry. The online Medical Dictionary defines it as "the linear dimension in the midline from the hairline to menton." Anterior facial height is rather self-evidently described as "the sum of upper and lower facial heights, the lower limit of the latter variously defined as the pogonion, gnathion, or menton. Posterior facial height is often measured from the gonion to the condylare, sella, or center of face point." The occlusal correlate of facial height is the vertical dimension of occlusion (VDO).
This article describes the production of a fully customized, twin-wire lingual bracket using a 3D printer. Indirect-bonding jigs are printed along with the brackets. The resin material is strong enough to withstand orthodontic forces when two strands of wire are used; friction is minimized by forming the slot entrance as a clip.
The authors introduce a comprehensive esthetic interdisciplinary treatment approach, including clear aligners, for short-face patients with complex facial, smile, and esthetic problems. As demonstrated in four cases, the orthodontist may be required to coordinate treatment with prosthodontics, periodontics, restorative dentistry, and orthognathic surgery to achieve optimal results.
This biomechanical setup, called the handlebar-style technique, uses an osseointegrated implant-supported device as anchorage to accommodate vectors for correction of a single misaligned tooth while preventing undesirable movement of adjacent teeth. An existing implant can be used or one can be strategically placed, as illustrated in two cases.
Clinicians have many choices of lithium-ion battery-powered portable light-curing units at various price points. This study measures the decline in light intensity and irradiance percentage as voltage declines in several commonly available devices. Recommendations are made for the inclusion of LED driver circuits with constant current.
A nonextraction approach is demonstrated in an adult high-angle patient with a skeletal Class malocclusion and severe crowding. By using low-friction, passive self-ligating brackets and bilateral temporary anchorage devices over 18 months of treatment, the authors are able to avoid any surgical intervention other than an advancement genioplasty.
Uprighting canines is challenging with lingual appliances because of the narrow brackets and short interbracket distances. This Pearl describes a lingual technique that can be effectively employed after premolar extractions, using a special Incognito canine bracket with an auxiliary tube in combination with lingual power arms and palatal mini-implants.
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