PubMed Health⌕ Search

Biomedical subjects

S A Zijderveld

Publications and source records attributed to S A Zijderveld.

4 recordsLinked to original sources
PubMed1999

Preoperative antibiotic prophylaxis in orthognathic surgery: a randomized, double-blind, and placebo-controlled clinical study.

PURPOSE: This study evaluated the need for antibiotic prophylaxis in orthognathic surgery. PATIENTS AND METHODS: Fifty-four patients (age range, 18 to 40 years) underwent bimaxillary orthognatic surgery. After randomization, a placebo (n = 19), 2,200 mg amoxicillin-clavulanic acid (n = 18), or 1,500 mg cefuroxime (n = 17) was administered in a double-blind fashion. During the first month, the postoperative course was observed according to the clinical parameters of infection, total leukocyte count and erythrocyte sedimentation rate (ESR). RESULTS: Fifteen of 54 patients developed a wound infection. Of these, 10 had received a placebo; 3, cefuroxime; and 2, amoxicillin-clavulanic acid. CONCLUSIONS: There was a statistically significant (P<.004) increased risk of having an infectious complication after bimaxillary orthognathic surgery without antibiotic prophylaxis. No significant difference in the incidence of infectious complications was found between the 2 medications.

Adolescent↗
PubMed1998

Management of posttraumatic malocclusion caused by condylar process fractures.

PURPOSE: The aim of the study was to evaluate the results of orthognathic surgery in cases with posttraumatic malocclusion as a long-term complication of condylar process fractures. PATIENTS AND METHODS: A retrospective study on 21 patients with posttraumatic malocclusions attributable to condylar process fractures was performed. In group I, 15 patients were treated for asymmetric malocclusion with unilateral or bilateral mandibular ramus osteotomies. In group II, six patients were treated for anterior open bit with either a Le Fort I osteotomy (n=5) or a bilateral ramus osteotomy (n=1). All patients had clinical and radiographic follow-up for at least 1 year. RESULTS: Stable dental and cephalometric results were obtained in all patients except the one in group II who was treated with bilateral sagittal split osteotomies. In two cases, both in the asymmetric group, minor occlusal interferences had to be treated by equilibration in the early postoperative period. CONCLUSIONS: Orthognathic surgery is a predictable and stable method for the treatment of posttraumatic malocclusion due to condylar process fractures. Maxillary orthognathic surgery is successful in correcting symmetric anterior open bites due to bilateral condylar process fractures. Because posttraumatic malocclusion is a rare complication after closed treatment of condylar process fractures, and it can be treated satisfactorily using orthognathic surgery, routine open reduction and fixation of condylar process fractures is not indicated to prevent posttraumatic malocclusion.

Adolescent↗
PubMed1997

[Pre-implantation surgery of the atrophied maxilla. A review of the literature].

The aim of preprosthetic reconstructive surgery of the resorbed maxilla is to create sufficient bone of good quality for implant placement. The classification of the edentulous jaws by Cawood and Howell is mostly used as point of departure in planning preprosthetic reconstructive surgery. In this review article some procedures and results are mentioned as described in recent literature.

Alveolar Bone Loss↗