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Biomedical subjects

D E Frost

Publications and source records attributed to D E Frost.

28 records · Page 2Linked to original sources

Role perceptions and behavior of the immediate superior: moderating effects on the prediction of leadership effectiveness.

The relationship between role conflict or role ambiguity and behavior of the immediate superior is investigated. It is hypothesized that behaviors which are associated with subordinates' role perceptions will moderate the relationship between subordinates' ability and their performance. First- and second-level leaders were asked to provide data on their job attitudes, co-worker relations, and experience. Respondents were also given a short test of intelligence, and their job performance was rated by knowledgeable superiors. Results show that boss behavior creating role conflict for first-level leaders was a significant moderator for these leaders' ability and performance correlations. For second-level leaders, boss behavior which created role ambiguity was a significant moderator of ability and performance correlations. It is concluded that experience has a positive relationship with performance when stress is high and that intelligence has a positive relationship with performance only when stress is low. It is further argued that stress with the boss is best described as behavior which leads to role conflict and ambiguity for subordinates in leadership positions. Implications for role theory and leadership theory are discussed.

Administrative Personnel↗

Revascularization and healing of onlay particulate allogeneic bone grafts in primates.

Particle size of allogeneic bone grafts was investigated to determine its effect on revascularization and healing. Freeze-dried chips of different sizes were placed on the monkey lateral mandibular cortex, and the subsequent healing and revascularization were studied by histologic, autoradiographic, and microangiographic techniques. It appears that allogeneic bone is a reasonable substitute for autologous bone in mandibular ridge augmentation procedures.

Animals↗

Nursing care of patients in intermaxillary fixation.

Often patients in IMF are healthier, tend to be more independent, and have shorter hospital stays than many patients hospitalized for other reasons. This is by no means any indication that they do not require close assessment and skilled nursing care. While recovering from anesthesia, airway obstruction and vomiting are real dangers. Although wire cutters are a necessary safety precaution and a part of the legal standard of practice, nurses and patients should not rely solely on them in the incidence of shortness of breath or vomiting. Nurses and patients should know the proper technique for clearing the mouth and airway of a patient in IMF. Hemorrhage evaluation and secretion control also require skilled observation and assistance by the nurse. Patients in IMF benefit from a decrease in anxiety levels when they are educated in airway clearance, secretion control, comfort measures, and diet. The nursing care of patients in IMF is rewarding and challenging for many areas of nursing.

Fracture Fixation↗

Application of direct magnification radiographic technique to the jaws.

Direct magnification radiography is widely applicable to situations in which enhanced definition and enlarged images are desirable. This technique is capable of providing high subject resolution when conventional radiography is not definitive. It serves as a variable supplementary radiograph for the diagnosis of conditions in the oral and maxillofacial region. The general mechanics of the technique as well as its possible use as a supplementary high detail film are discussed. Three cases are reported in which this technique was applied in the diagnosis of oral and maxillofacial surgery patients.

Aged↗

Healing of interpositional allogeneic lyophilized bone grafts following total maxillary osteotomy.

Healing of allogeneic lyophilized bone grafted to total maxillary osteotomy sites was studied in Macaca fasciularis monkeys using histologic, microangiographic, and autoradiographic methods. Results of the study indicate that allogeneic lyophilized grafts are slowly replaced by host bone. Revascularization around the margins of the graft becomes evident at two weeks and increases until eight weeks; a hypervascular response is still present at six months. The palatal mucosa and facial gingiva provide an adequate nutrient pedicle for interpositional allogeneic grafts.

Alveolar Ridge Augmentation↗

Mandibular interpositional and onlay bone grafting for treatment of mandibular bony deficiency in the edentulous patient.

The development of interpositional and onlay bone grafting techniques for atrophic mandibles is reviewed. A further modification of the visor osteotomy is presented along with follow-up evaluation of the conditions of 16 patients. Results of radiographic measurements show the procedure to be stable, vertical resorption of the augmented mandible in the body regions being 11.2% over a mean follow-up of 8.8 months. Neurosensory evaluation showed altered sensation and dysesthesia as a significant problem in these patients. The results are presented and discussed.

Adult↗

Cephalometric diagnosis and surgical-orthodontic correction of apertognathia.

Nineteen postadolescent white woman with uncorrected Class I molar and/or canine occlusion were compared cephalometrically to thirteen postadolescent white women with skeletal apertognathia that was later corrected by a combination of surgical procedures, the common denominator being maxillary posterior superior repositioning. The cephalometric tracings were compared statistically by evaluating the study group preoperatively, immediately postoperatively, and at a long-term follow-up appointment. The results indicate that there is a statistical difference in certain important measurements between normal persons and preoperative apertognathic patients with the deformity identified in the dentoalveolar complex of the maxilla. Posterior maxillary superior repositioning tends to correct this skeletal deformity, with postoperative measurements approaching the normal values. The correction proved to be stable over a mean follow-up period of 19 months (range, 7 to 30 months).

Adolescent↗

Aphthous ulcer--a treatment complication. Report of a case.

Multiple theories of the cause and treatment of aphthous ulcers are described in the medical and dental literature. A case is reported in which there were posttreatment sequelae from the application of a sillver-nitrate stick (pencil) to an aphthous ulcer on the tongue. Compications subsequent to the use of silver nitrate may contraindicate the use of this agent in its highly concentrated form on the mucous membranes of the mouth.

Burns, Chemical↗