ABSTRACT
Computerized video imaging is a valuable adjunct for communication with patients and planning orthognathic surgical treatment. The incorporation of adjunctive soft tissue procedures to enhance the final aesthetic result of orthognathic surgery is a valuable addition to the orthodontic and orthognathic treatment plan. This paper presents the use of video imaging techniques in the planning and execution of comprehensive functional and aesthetically orientated orthodontic and surgical treatment.
Subject(s)
Esthetics , Jaw Abnormalities/surgery , Malocclusion/surgery , Patient Care Planning , Therapy, Computer-Assisted , Video Recording , Adolescent , Cephalometry , Child , Chin/surgery , Cleft Palate/surgery , Combined Modality Therapy , Facial Asymmetry/surgery , Female , Humans , Malocclusion/therapy , Maxilla/abnormalities , Maxilla/surgery , Osteotomy/methods , Retrognathia/surgery , Rhinoplasty , Tooth Movement TechniquesABSTRACT
Diagnostic treatment planning of Class III malocclusion is complicated due to the interaction of development, timing, dental pattern, and skeletal relationships. Historically, the treatment of adult Class III malocclusions has tended to be seen primarily as cases of mandibular prognathism. As diagnostic acumen and surgical skills improve and merge, orthodontic and surgical treatment plans for Class III malocclusions have become more common. Class III malocclusions now tend to be described in terms of mandibular prognathism, horizontal maxillary hypoplasia, maxillary vertical hypoplasia, and mandibular dentoalveolar retrusion. The purpose of this paper is to present a combined surgical-orthodontic treatment approach involving clockwise rotation of the occlusal plane for treatment of hypodivergent Class III skeletal pattern and dental malocclusion.
Subject(s)
Malocclusion, Angle Class III/diagnosis , Malocclusion, Angle Class III/surgery , Orthognathic Surgical Procedures , Adult , Cephalometry , Esthetics, Dental , Female , Humans , Mandible/abnormalities , Middle Aged , Orthodontics, Corrective/methods , Patient Care Planning , Prognathism/surgery , Rotation , Vertical DimensionABSTRACT
Convection heat has become a popular means of sterilization for orthodontic practices. Several commercial brands are currently being marketed. This investigation compares the Cox sterilizer, the Dentronix DDS 5000, and a Farberware convection oven by means of thermal and bacteriologic testing. Thermal testing was conducted with a thermocouple in well-defined areas of each oven, while bacterologic evaluation involved Bacillus subtilis spore strips placed in specific sectors. The results showed that specific areas of the Cox sterilizer dropped below 375 degrees F during the sterilization cycle, while the DDS 5000 maintained temperatures above 375 degrees F. The Farberware oven reached a mean temperature (including 1 standard deviation) above 375 degrees F when set at 400 degrees F after the oven was allowed to warm up for 13 minutes. Spore growth was detected in several sectors of both the Cox sterilizer and the DDS 5000. No growth was seen in the Farberware oven.
Subject(s)
Dental Offices , Orthodontics , Sterilization/instrumentation , Hot Temperature , Humans , Sterilization/methods , ThermodynamicsABSTRACT
Computerized video imaging techniques that enable superimposition of cephalometric radiographs and tracings on the image of the soft tissue profile are presented. This superimposition allows visualization of the underlying skeletal and dental hard tissues as they relate to the profile and permits surgical planners to be more cognizant of the limitations that the teeth and occlusion present as the esthetic treatment goals are defined. Step-by-step treatment planning of a patient is used to demonstrate the techniques.
Subject(s)
Cephalometry/methods , Image Processing, Computer-Assisted , Malocclusion, Angle Class II/diagnosis , Video Recording , Face/anatomy & histology , Female , Humans , Malocclusion, Angle Class II/surgery , Patient Care PlanningABSTRACT
The purpose of this study was to determine whether anterior and inferior displacement of the maxilla seen with rapid palatal expansion when done with a banded rapid palatal expansion appliance is significantly different from an occlusally bonded rapid palatal expansion appliance. It was hypothesized that the bonded appliance would limit unwanted displacement of the maxilla by producing vertical forces on both arches in a manner similar to a functional appliance. The study was conducted using the bonded appliance on 20 adolescents and comparing the results with those of a banded appliance population--namely, 60 cases from Wertz's study. Lateral cephalometric radiographs were taken before treatment and again after the expansion appliances were removed. The results of this study suggest that the downward and anterior displacement of the maxilla often associated with the banded rapid palatal expansion appliance may be negated or minimized with the more versatile bonded appliance.
Subject(s)
Dental Bonding , Facial Bones/anatomy & histology , Maxilla/anatomy & histology , Palatal Expansion Technique/instrumentation , Adolescent , Cephalometry , Child , Facial Bones/physiology , Female , Humans , Male , Maxilla/physiology , Vertical DimensionABSTRACT
With the advancements of computer knowledge today, treatment planning and counseling are becoming more efficient by means of video imaging. Using a video image of a patient, esthetic and functional decisions can be made by the surgeon, orthodontist, and patient in a consensus manner. Distortion characteristics of video hardware, software, and the video camera are established, and adoption of imaging techniques is employed to maximize accuracy of the imaging process. Patients' attitudes toward video imaging concerning expectations, value of visual prediction, and degree of realism are also discussed. This study is intended to establish some of the basic goals of video imaging with general information in regard to hardware and software requirements.