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Biomedical subjects

H C Kerstens

Publications and source records attributed to H C Kerstens.

11 recordsLinked to original sources
PubMed1994

Condylar resorption in orthognathic surgery. The role of intermaxillary fixation.

Condylar resorption that occurs after orthognathic surgery was investigated in a large sample of patients treated in the Department of Oral and Maxillofacial Surgery of the Free University in Amsterdam, the Netherlands. The findings correspond with previous publications on this subject. In a 1-year follow-up study the role of intermaxillary fixation was investigated radiologically. In a group of 158 patients prone to show occurrence of condylar resorption, 24 (26.4%) of the 91 patients treated with intermaxillary fixation showed signs of condylar resorption. In the group of 67 patients treated without intermaxillary fixation only eight (11.9%) of the patients showed signs of reduced volume of the condyle. Avoidance of intermaxillary fixation seems to reduce the incidence of condylar resorption after orthognathic surgery in patients with a mandibular deficiency with high mandibular plane angle.

Adolescent↗
PubMed1990

Condylar atrophy and osteoarthrosis after bimaxillary surgery.

Radiographic evidence of condylar atrophy was seen in 12 patients out of 206 patients who underwent surgical orthodontic treatment. All 12 patients had the same dentofacial deformity, high-angle mandibular retrognathia (Class II open bite), and all but one had bimaxillary surgery. The etiologic factors are discussed. The dentofacial deformity is considered to be the main reason for condylar resorption, but orthognathic surgery is supposed to stimulate the progress of the disease by increased loading, disk displacement, and immobilization.

Atrophy↗
PubMed1989

Magnetic resonance imaging of partial temporomandibular joint disc displacement.

Unilateral magnetic resonance imaging (MRI) of the symptomatic temporomandibular joint (TMJ) was performed on 55 patients. The position of the articular disc in relation to the condyle was established on sagittal images. Particular attention was paid to partial or complete anterior positioning of the disc. MRI was correlated with clinical and, in 33 cases, surgical findings. The concept of partial anterior displacement may be useful in relation to treatment planning.

Adolescent↗
PubMed1989

Eminectomy and discoplasty for correction of the displaced temporomandibular joint disc.

Eminectomy with or without a subsequent discoplasty was performed on 30 patients (36 joints) with internal derangement of the temporomandibular joint (TMJ) confirmed either arthrographically or with magnetic resonance imaging. The importance of the inclination of the TMJ eminence and the therapeutic value of eminectomy are discussed. The TMJs were clinically evaluated before and at least 1 year after surgery in respect to opening function and symptoms. The results were promising (86.8% of the patients felt better). In five patients with a preoperative diagnosis of anterior disc displacement with reduction, only an eminectomy was performed. In these five cases eminectomy alone was sufficient to restore normal TMJ function.

Adolescent↗
PubMed1989

Inclination of the temporomandibular joint eminence and anterior disc displacement.

The articular eminence angle of 179 temporomandibular joints (TMJ) with anterior disc displacement (ADD) in 179 patients was measured and compared with 200 left and 200 right joints of 400 young adults without TMJ dysfunction. A steeper inclination of the posterior slope of the articular eminence, with a mean difference compared to the control group of 14.5 degrees, was seen in joints with ADD. In the group of 179 joints with ADD of the TMJ, no difference was seen in the mean articular eminence angle between joints with an ADD with reduction, and an ADD without reduction, between conservatively or surgically treated joints, or between joints with different presumed causes of ADD.

Adolescent↗
PubMed1989

Temporomandibular joint symptoms in orthognathic surgery.

Pre and postoperative TMJ-symptoms were observed in the various dentofacial deformities of 480 patients operated on because of a dysgnathia. Preoperative TMJ-symptoms were seen in 16.2% of the 480 patients. After surgery 66% of the preoperatively symptomatic patients reported fewer or no TMJ-symptoms. On the other hand 11.5% of preoperatively asymptomatic patients developed TMJ-symptoms after surgery. Although not statistically proven, a tendency was seen to more TMJ-symptoms in low and normal angle patients in comparison with high angle patients. The chance is high, however, that TMJ-symptoms in low and normal angle mandibular retrognathism patients will improve after surgery. The chance of developing TMJ-symptoms in high angle, absolute mandibular retrognathism patients, operated on by means of bimaxillary surgery, is considerable.

Cohort Studies↗
PubMed1985

Verruciform xanthoma of the oral mucosa.

The verruciform xanthoma is a rather rare lesion that is mostly confined to the oral mucosa. The clinical picture may vary considerably. The diagnosis is based on the presence of numerous xanthoma cells in the connective tissue papillae. A case of verruciform xanthoma in the floor of the mouth in a 45-year-old woman is presented. The findings reported in the literature are also discussed.

Adult↗