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Biomedical subjects

R H Haug

Publications and source records attributed to R H Haug.

At least 55 records · Page 3Linked to original sources
PubMed1993

Management of closed head injury in the patient with maxillofacial trauma.

Closed head injury (CHI) affects approximately one in five patients who sustain facial fractures. The effects can range from simple loss of consciousness to coma and death. The high incidence of CHI in the facial trauma population and the potential for mortality and neurologic morbidity make it a distinct concern of the practicing oral and maxillofacial surgeon. This article discusses the evaluation, monitoring, and management of CHI and includes special consideration of the treatment of maxillofacial injuries in these patients.

Brain Injuries↗
PubMed1993

A comparison of microscrew and suture fixation for porous high-density polyethylene orbital floor implants.

Twenty oral and maxillofacial surgeons compared the surgical features of microscrew fixation technique with a suture technique for fixation of porous high-density polyethylene orbital floor implants. One investigator then compared material features of these two fixation techniques using recently procured bovine ribs. The microscrew technique was found to be quicker (P > .01) and easier (P > .001), and it provided a higher quality of fixation (P > .001) than the suture technique. The microscrew/implant system had a greater pullout strength (P > .001) and shear strength (P > .001) than the suture/implant system.

Animals↗
PubMed1992

The morbidity associated with fifty maxillary fractures treated by closed reduction.

Fifty patients with maxillary fractures treated by closed reduction over an 85 month period at a Level I trauma center were reviewed. Thirty patients (60%) experienced forty-one midfacial complications. The most frequent problems were infraorbital nerve paresthesia (12), enophthalmus (5), septal deviation (3), and altered vision (3). No relationship could be established between complications and age, sex, cause of injury, or the method of suspension used. Most complications were related to concomitant injury or the concurrent management of fractures of other facial bones. Only eight problems (16%) were directly attributed to the closed reduction of maxillary fractures. Patients treated by closed reduction and maxillomandibular fixation without suspension experienced no surgical complications.

Adolescent↗
PubMed1992

The third molar as a cause of deep space infections.

An 81-month review of patients with deep space infections attributed to third molars requiring hospital admission is presented. Thirty-one patients were identified, with males predominating 2:1 and mandibular third molars as an etiology predominating 15:1. All patients were aged 23 years or older. Most patients identified (24) had one or more medical problems or other risk factors, the most frequent of which was smoking (18). All patients developing postoperative infections (9) had complete or partial bone impactions and a preoperative diagnosis of pericoronitis.

Abscess↗
PubMed1992

A review of 100 closed head injuries associated with facial fractures.

One hundred closed head injuries associated with facial fractures treated over a 78-month period at a level I trauma center in Northeast Ohio were reviewed. The incidence of closed head injury in patients with facial fractures was 17.5%. Males suffered closed head injuries four times more often than females, and sustained severe intracranial injuries eight times as often. The 16- to 30-year age group predominated (59%). Although motor vehicle accidents were the most frequent cause of injury (61%), motorcycle accidents were associated with the most severe head injury. The mandible/midface fracture ratio (1.3:1) was almost half that of the non-head-injured population (2.1:1). Facial fracture complications were found to have a similar incidence (14%) as in the non-head-injured population, but were associated with more severe intracranial injuries.

Accidents, Traffic↗
PubMed1992

The effects of the Le Fort I osteotomy on the periodontium.

Two age-matched populations of equal size (n = 40), one having orthodontic therapy and the other combined orthodontic therapy and orthognathic surgery, were evaluated for their periodontal status 1 to 10 years posttherapy. The parameters investigated were plaque index, gingival index, tooth mobility, width of keratinized tissue, probing depth, gingival recession, and attachment level. No significant differences were found (P less than .05). Within the surgery group, patients with maxillary osteotomies segmentalized between the central incisors (n = 11) and between the canines and second premolars (n = 12) were evaluated using the same parameters and compared with their nonsegmental counterparts. No significant differences were found for patients with osteotomies segmentalized between the central incisors. However, a statistically significant increase in probe depth and loss of attachment level of up to 0.3 mm was found at the sites of osteotomies segmentalized between the canine and second premolar (P less than .05). This difference was not considered clinically significant.

Adolescent↗
PubMed1991

Development of an in vitro temporomandibular joint cartilage analog.

A method of producing an in vitro cartilage tissue analog by traditional organ culture methods in an animal model is presented. The resultant tissue analog had the clinical appearance and characteristics of the temporomandibular joint disc. Development of such an analog for in vivo autografting could provide an alternative to present methods for disc repair.

Animals↗
PubMed1991

An epidemiologic and anatomic survey of odontogenic infections.

An 81-month review of patients with infections of odontogenic origin admitted to the oral and maxillofacial surgery service at a county hospital and teaching facility in northeast Ohio is presented. Age, sex, race, etiology, pathogens isolated, admission temperature, and admission white blood cell count were identified and related to the anatomic space(s) encountered. Multispace and single-space infections occurred with equal distribution. In both the multispace and single-space infections, the submandibular and buccal spaces were most frequently involved. Males were affected with single-space infections twice as often as females. An equal distribution among sexes was found in multispace infections. The most common age range for all infections was 25 to 30 years. alpha-Hemolytic streptococci, Bacteroides melaninogenicus, and beta-hemolytic streptococci were the most frequently isolated pathogens. Third molars were the prevalent cause in both multispace and single-space infections that required hospital admission.

Adolescent↗
PubMed1991

Does prestretching stainless-steel wire have any clinical significance?

Clinical parameters of prestretch and tension forces placed on stainless-steel wire by 20 oral and maxillofacial surgeons were obtained. Unstretched wire was clinically as tough or tougher than prestretched wire of a similar gauge. Both prestretched and unstretched wires, twisted to their maximum, loosened when under tension. As the prestretch forces increased, the clinical strength of the wire diminished.

Analysis of Variance↗
PubMed1991

Care of the asthmatic oral and maxillofacial surgery patient.

It is estimated that asthma affects 6 to 9 million people in the United States. The nature of this disease makes it a special concern to the oral and maxillofacial surgeon. Appropriate management of the asthmatic patient with regard to anesthesia and surgical procedures of the oral and maxillofacial region is discussed.

Asthma↗