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Biomedical subjects

D M Sarver

Publications and source records attributed to D M Sarver.

28 records · Page 2Linked to original sources
PubMed1991

Long-term soft tissue response to LeFort I maxillary superior repositioning.

The purpose of this study was to compare short-term (approximately 12 months postoperatively) and long-term (24 to 81 months postoperatively) records of 36 patients who underwent superior repositioning of the maxilla via LeFort 1 osteotomies. The parameters of measurement were set up to analyze the net response of the soft tissues of the face to superior repositioning of the maxilla. The results of this study show that soft-tissue changes associated with maxillary impaction are minimal and that no significant differences exist between twelve-month records and five-year records.

Adult↗
PubMed1991

Incorporation of facial plastic surgery in the planning and treatment of orthognathic surgical cases.

Until recently, orthognathic surgery and cosmetic soft tissue surgery have been separate clinical endeavors. This article presents examples of soft tissue surgical procedures carried out with orthognathic surgery to enhance the overall result. Video imaging techniques have been integrated into the planning process to more clearly define functional and esthetic goals. The technical achievement of combined orthognathic and esthetic procedures, as well as the timing of treatment between the orthodontist, oral surgeon, and plastic surgeon, is discussed.

Adolescent↗
PubMed1990

Video imaging: techniques for superimposition of cephalometric radiography and profile images.

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.

Cephalometry↗
PubMed1989

Skeletal changes in vertical and anterior displacement of the maxilla with bonded rapid palatal expansion appliances.

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.

Adolescent↗
PubMed1989

Short-term and long-term soft tissue profile changes after mandibular advancements using rigid fixation techniques.

This study was designed to describe short- and long-term soft tissue profile changes that follow surgical advancement of the mandible, to provide a database for prediction of facial changes following surgery. A number of hard and soft tissue landmarks were identified on serial cephalometric tracings of 31 patients. The long-term data (x = 14.0 months postsurgery) showed that changes in soft tissue landmarks overlying the skeletal structures followed their hard tissue counterpart in a 1:1 ratio in the horizontal direction. Horizontal hard to soft tissue landmark changes between mandibular incisor and lower lip, however, were found to be different; the average ratio was 0.43:1.00. Short-term data (x = 2.7 months postsurgery) showed soft tissue changes to be stable when compared to long-term changes.

Adolescent↗
PubMed1988

Video imaging for planning and counseling in orthognathic surgery.

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.

Consumer Behavior↗
PubMed1988

Simultaneous rhinoplasty procedures in orthognathic surgery.

22 septorhinoplasties were performed in conjunction with orthognathic surgery, and followed for at least 12 months. No significant difference could be established between 15 cases done with a LeFort I and 7 cases done with isolated sagittal split osteotomies. Rigid bicortical fixation of the mandible was required to change the endotracheal tube from nose to mouth. Plating of the maxilla is recommended to achieve a stable bony support for the nose. Patient satisfaction and perception were surveyed. Clinical results are presented with pre- and post-operative photographs, along with mean data for the total group.

Adolescent↗
PubMed1981

Quantitative evaluation of nasal airflow in relation to facial morphology.

This study examines the relationship between facial morphology and nasal respiration. Nasal resistance to expiratory airflow, average volume flow rate, and temporal characteristics of the respiratory cycle were measured for twenty-eight adults. Subjects were categorized as having (1) normal facial proportions with competent lips (n = 10), (2) normal facial proportions with incompetent lips (n = 9), and (3) long vertical face height (n = 9). Results indicate that the three groups do not differ significantly in terms of nasal airflow. Lip incompetence is not synonymous with mouth breathing. Although long-faced subjects as a group had a higher mean value of nasal resistance, the range of variation was so great as to preclude the diagnosis of nasal obstruction from an assessment of facial morphology.

Adolescent↗