PubMed Health⌕ Search

Biomedical subjects

W S Parker

Publications and source records attributed to W S Parker.

At least 19 recordsLinked to original sources
PubMed1992

Tinnitus and vertigo in patients with temporomandibular disorder.

The association of tinnitus and vertigo with temporomandibular disorder (TMD) has been debated for many years. The observation that patients with TMD have otologic symptoms is confounded because tinnitus and vertigo are common symptoms in the normal population. The present study was conducted to determine if tinnitus and vertigo are actually more prevalent in patients with TMD than in appropriate age-matched controls. One control group was recruited from patients seeking care for health maintenance and the other from patients seeking routine dental care. We surveyed 1032 patients: 338 had TMD and 694 served as two age-matched control groups. Tinnitus and vertigo symptoms were significantly more prevalent in the TMD group than in either of the control groups. The mechanism of the association of TMD and otologic symptoms is unknown.

Adolescent↗
PubMed1990

Transposed premolars, canines, and lateral incisors.

Transposed teeth are not uncommon in dental practice nor are those in ectopic eruption patterns. Such teeth may be managed in various ways. Even with close observation, their course may be unpredictable; indeed, it may be necessary to change the treatment plan during treatment. Several case histories illustrate these situations.

Adolescent↗
PubMed1989

Retention--retainers may be forever.

The very word "retain" means "to hold back or hold secure." From the earliest days of orthodontic tooth movement, many schemes have been proposed to ensure posttreatment stability. The very best research indicates that no solution has been found. A posttreatment routine is recommended. It is suggested that each patient be advised to follow this and further warned that the dental profession does not have any reliable method to predict future dental stability with or without orthodontic treatment.

Child↗
PubMed1987

An alternate practice sale/retirement arrangement. A way out.

Eventually every orthodontist will leave his practice because of illness, death, or retirement. Two widely used methods to accomplish this separation are described. They are "sale of the practice" or "integrating an associate into the practice." This "alternate arrangement" provides that the outgoing orthodontist complete his own cases. The new man gradually, but rapidly, assumes control; the senior man relinquishes control and responsibility. Immediate income is provided for the incoming orthodontist, continuing income for the outgoing orthodontist. The psychologic needs of both individuals are thoroughly addressed.

Income↗
PubMed1985

A perspective of the Crozat appliance with case reports of its present use.

Dr. Crozat of New Orleans first publicly described his removable appliance in 1919. He led a small study club for years, sharing his ideas with a few fellow orthodontists, but published only one article. A.T. Wiebrecht, a general dentist from Milwaukee, studied with Dr. Crozat for many years. In 1966, Wiebrecht published his book, Crozat Appliances in Maxillofacial Orthopedics, and for the first time information about the Crozat appliance was made available to all dentists. Dr. Wiebrecht's goal was to treat all patients to Pont's index; therefore, he advocated lateral expansion of molars and premolars. Wiebrecht's philosophy of expansion appeals to many gnathologists and pedodontists. Dr. Crozat's goal was to solve crowding by the distal movement of molars. As he moved the molars distally, expansion of the appliance was necessary because the bony dental arch itself is wider in the posterior regions. He did expand the lower premolars if they were lingually positioned, but he did not expand the upper canines or premolars as a routine part of his treatment. Thus, two entirely different applications of this appliance have been developed. This article examines the history of Dr. Crozat and his appliance, discusses the development and divergence in its use, and demonstrates this divergence with a few selected, documented case reports.

Activator Appliances↗
PubMed1974

Smallpox control.

Explore the source record for details and available documents.

Adolescent↗
PubMed1973

Mobile coronary care provided by ambulance personnel.

Mobile coronary care has been provided in Brighton by ambulance personnel without immediate help from physicians or nurses. No additional vehicles or staff were required. The capital cost of the experiment was therefore small and additional running costs were negligible. The results have been monitored by retrospective analysis of electrocardiograms recorded in the ambulance and stored on magnetic tape. In the first 12 months of operation to July 1972, 1,082 patients with suspected cardiac emergencies were carried in two vehicles. Subsequent analysis showed that 76% of these patients had acute symptoms from ischaemic heart disease or had circulatory arrest. Eighty-six per cent. of arrhythmias were diagnosed correctly by the ambulance attendants. Though only eight cases of primary ventricular fibrillation occurred during or shortly before transit all were successfully reversed, and five of these patients subsequently left hospital alive. Other benefits of the scheme have included an appreciable reduction in the median delay between onset of presenting symptoms in patients with acute myocardial ischaemia and their admission to hospital.

Allied Health Personnel↗