Quality of Life After Orthognathic Surgery in Swedish Patients: A Register-Based Cohort.

Objective: This study aimed to evaluate the effect of orthognathic surgery on quality of life among Swedish patients.

Materials And Methods: Patients subjected to orthognathic surgery due to dentofacial deformity (DFD) and registered in the National Register of Orthognathic Surgery (NROK) in Sweden between 2017 and 2020 were eligible for inclusion in this study. The Swedish-validated Orthognathic Quality of Life Questionnaire (S-OQLQ) was used to evaluate patient quality of life before and after surgery.

Starting a Swedish national quality registry for orthognathic surgery: a tool for auditing fundamentals of care.

Background: National quality registries (NQRs) provide open data for user-directed acquisition. National Quality Registry (NQR) data are often used to analyze the rates of treatment success and adverse events for studies that aim to improve treatment quality and patient satisfaction. Thus, NQRs promote the goal of achieving evidence-based therapies.

KNOWLEDGE GAPS IN ORAL AND MAXILLOFACIAL SURGERY: A SYSTEMATIC MAPPING.

Objectives: The aim of this study was to evaluate available knowledge and identify knowledge gaps within the field of oral and maxillofacial surgery, by systematically collecting and evaluating systematic reviews. Twelve specific domains were selected: surgical removal of teeth, antibiotic and corticosteroid prophylaxis, orofacial infections, dental and facial trauma, orthognathic surgery, reconstructive surgery, benign tumors, cysts, premalignant lesions, oral complications of treatment of malignant tumors, hyperbaric oxygen therapy, temporomandibular joint surgery, cost effectiveness of different surgical treatments, and ethics.

Methods: The literature search, covering four databases, was conducted during September 2014: PubMed, The Cochrane library, Centre for Reviews and Dissemination and EBSCO dentistry and oral science source.

TMD before and after correction of dentofacial deformities by orthodontic and orthognathic treatment.

The aims of the study were to investigate the alteration of temporomandibular disorders (TMD) after correction of dentofacial deformities by orthodontic treatment in conjunction with orthognathic surgery; and to compare the frequency of TMD in patients with dentofacial deformities with an age and gender matched control group. TMD were evaluated in 121 consecutive patients (treatment group), referred for orthognathic surgery, by a questionnaire and a clinical examination. 18 months after treatment, 81% of the patients completed a follow-up examination.

Maxillary sinus augmentation with iliac autograft - a health-economic analysis.

Purpose: To estimate and compare the costs of maxillary sinus augmentation performed with autologous bone graft either from the iliac crest or from local bone harvested from the mandibula. To evaluate post-operative health-related quality-of-life parameters for patients subjected to sinus augmentation and iliac bone surgery.

Material And Methods: The hospital records of 14 patients subjected to sinus augmentation with iliac autograft, and 14 patients treated with local autograft, were analysed with regard to costs related to surgery, hospitalization and sick leave.

Bone substitute as an on-lay graft on rat tibia.

Objectives: To investigate the capacity of Cerament, an injectable bone substitute, to guide bone generation from a cortical surface.

Materials And Method: Cerament was applied to the cortical surface of rat tibiae and investigated histologically after 3, 6 and 12 weeks, using a procedure similar to that performed in sham-operated rats.

Results: In both groups, the thickness of the bone cortex increased significantly from 473 + or - 58 microm (mean + or - SD) at day 0 to 1193 + or - 255 microm (Cerament) and 942 + or - 323 microm (sham) after 3 weeks.

Jaw fractures diagnosed and treated at Malmö University Hospital: a comparison of three decades.

The aim was to report the distribution, frequency and aetiology of jaw fractures in patients treated at the University Hospital, Malmö, 1993-2003 and to compare two previous studies from 1952-1962 and 1975-1985. In 1993-2003, 461 patients, 137 women (mean age 42 years; range 15-82) and 324 men (mean age 28 years; range 17-59) were diagnosed and treated. Women were significantly older than men (P<0.

TMD in consecutive patients referred for orthognathic surgery.

Objective: To answer the question whether temporomandibular disorders (TMD) were more common in a group of individuals referred for orthognathic surgery than in a control group. The null hypothesis was that neither the frequency of signs and symptoms of TMD or diagnosed TMD would differ between the patient group and a control group.

Materials And Methods: A sample of 121 consecutive patients referred for orthognathic surgery at the Department of Oral Maxillofacial Surgery, Malmö University Hospital, Sweden, was interviewed and examined regarding signs and symptoms of TMD and headaches.

Effect of betamethasone on the degree of macrophage recruitment and nerve growth factor receptor p75 immunoreaction during recovery of the sciatic nerve after injury: an experimental study in rats.

Purpose: This study was designed to explain our previous findings of beneficial effects of betamethasone given perioperatively on decreasing the incidence of neurosensory disturbance after sagittal split osteotomy and improving functional recovery after crush injury to rat sciatic nerves. We analysed the pattern of macrophage recruitment and expression of nerve growth factor p75.

Material And Methods: The sciatic nerve was crushed in each of 42 animals by tying the nerve against a glass rod for 30s.

All-ceramic two- to five-unit implant-supported reconstructions. A randomized, prospective clinical trial.

The purpose of this study was to evaluate the clinical performance of two to five-unit implant-supported all-ceramic reconstructions and to compare the results of two different all-ceramic systems, Denzir (DZ) and In-Ceram Zirconia (InZ). Eighteen patients were treated with a total of 25 two- to five-unit implant-supported reconstructions. Nine patients were given reconstructions of the DZ system and the other nine reconstructions of the InZ system.

Systemic betamethasone accelerates functional recovery after a crush injury to rat sciatic nerve.

Purpose: The aim of the study was to evaluate the effect of perioperatively systemically administered betamethasone on nerve recovery (within or outside a confined space) after induced nerve crush injury.

Materials And Methods: The sciatic nerve of 40 adult Wistar rats was crushed. In half of the animals, the injured nerve was entrapped in a silicone tube to simulate the environment of a closed space, and in the other half the nerve was left to heal.

Neurosensory disturbance after sagittal split and intraoral vertical ramus osteotomy: as reported in questionnaires and patients' records.

This retrospective study aimed at evaluating the long-term incidence of neurosensory disturbance (NSD) after sagittal split osteotomy (SSO) and intraoral vertical ramus osteotomy (IVRO). Furthermore, a comparison was made between the results obtained by questionnaires and information in the patient records in the evaluation of nerve function. Finally, the degree of discomfort caused by the NSD was evaluated.

On neurosensory disturbance after sagittal split osteotomy.

Purpose: The purpose of this retrospective study was to assess the incidence of the neurosensory disturbance (NSD) after sagittal split osteotomy and evaluate NSD in relation to patient age, gender, satisfaction, and effect of steroids.

Patients And Methods: Questionnaires were mailed to all patients (31 women, 19 men) who underwent bilateral sagittal split osteotomy between 1995 and 1999, at least 1 year after the operation. Patients were queried about perceived NSD in the distribution of both inferior alveolar and lingual nerves, duration of these changes, and any influence of these changes on their quality of life.

Tapered implants in jaws with soft bone quality: a clinical and radiographic 1-year study of the Brånemark System Mark IV fixture.

Background: The survival rate of oral implants in soft-quality bone has been demonstrated to be inferior to that of implants inserted in good-quality bone. A possible way to increase the survival rate in soft-quality bone may be to use a tapered implant. Such an implant has been developed and manufactured by Nobel Biocare AB, Gothenburg, Sweden.

Incidence of neurosensory disturbance after sagittal split osteotomy alone or combined with genioplasty.

We mailed questionnaires to all patients who had had sagittal split osteotomies alone (n= 84) or in combination with genioplasty (n = 37) between 1995 and 2000, to find out the incidence of postoperative sensory disturbances. The patients with sagittal split osteotomies alone reported sensory disturbance in 48/131 (37%) operated sides. When combined with genioplasty patients experienced them in 20/54 (37%) operated sides.

The protective effect of zinc on rosin and resin acid toxicity in human polymorphonuclear leukocytes and human gingival fibroblasts in vitro.

Combinations of rosin and zinc are used in dentistry as components of periodontal dressings and cements and as root canal sealers. The composition and properties of rosins differ largely depending on source and refinement processes. Rosin (colophony) is composed of approximately 70% resin acids.

The effect of zinc on bacterial phagocytosis, killing and cytoprotection in human polymorphonuclear leucocytes.

An in vitro study examining the effects of zinc treatment on human PMN cell phagocytosis and killing of Staphylococcus aureus and Staphylococcus epidermidis and the cytoprotection of zinc against staphylococcal toxins. Phagocytosis was studied by transmission electron microscopy using different microbiological techniques, one of which was designed to follow the kinetics of bacterial killing. No effect was found on phagocytosis and bacterial killing.

Antimicrobial screening of zinc in the absence or presence of oleoresins and various resin acids.

Zinc and oleoresins are the main components of several wound dressings, and are also frequently used in root canal treatment. The in vitro antibacterial effects of zinc, six highly purified resin acids and two commercial oleoresins alone or combined in varying proportions were analysed. Oleoresins are composed of approximately 90% resin acids and the most common acids were included in this study.

Comparison of three test methods used for the diagnosis of candidiasis.

A total of 266 specimens was taken from oral mucosa or dentures of 88 patients with suspected Candida-infected oral mucosa. One-third of the debris from each sample was cultured on Microstix-Candida (C), strips, one-third was cultured on Oricult-N-plates, and the rest was collected on glass plates and stained by the periodic acid-Schiff (PAS) method. The PAS-stained samples were analyzed under the light microscope for the presence of Candida hyphae.

Neutralizing effect of zinc oxide on dehydroabietic acid-induced toxicity on human polymorphonuclear leukocytes.

The cytotoxic effect of dehydroabietic acid (DHAA), a resin acid found in rosin, was studied on human polymorphonuclear leukocytes (PMN) using leakage of 51Cr from prelabeled cells, supravital staining, and transmission electron microscopy. DHAA caused a strong dose-related release of 51Cr, a high uptake of trypan blue, and total cell necrosis as seen in transmission electron microscopy. Albumin slightly reduced the toxic effects, whereas the addition of zinc in various forms strongly inhibited these toxic effects of DHAA in the concentration range 10-500 micrograms/mL.

Neutralizing effect of zinc oxide on dehydroabietic acid-induced toxicity on human polymorphonuclear leukocytes.

The cytotoxic effect of dehydroabietic acid (DHAA), a resin acid found in rosin, was studied on human polymorphonuclear leukocytes using leakage of 51Cr from prelabeled cells, supravital staining, and transmission electron microscopy. DHAA caused a strong dose-related release of 51Cr, a high uptake of trypan blue, and total cell necrosis, as seen in transmission electron microscopy. Albumin slightly reduced the toxic effects, whereas the addition of zinc in various forms strongly inhibited these toxic effects of DHAA in the concentration range of 10-500 micrograms/mL.

Planning and control of vertical dimension in Le Fort I osteotomies.

Depending on the different anatomy of the soft and hard tissues, concavity or convexity of the face, measurements of inferior or superior repositioning of the maxilla may be less predictable when using only the osteotomy site for this calculation. A more reliable method would be to measure the distance from a bone mark in the forehead to the incisor edges. This method has been practiced by our clinic during the past five years.

The effect of zinc oxide on Staphylococcus aureus and polymorphonuclear cells in a tissue cage model.

The effect of zinc oxide on S. aureus (209 P) was studied in steel net tissue cages implanted subcutaneously in guinea pigs and rabbits. Zinc oxide installed in the tissue cages created high, sustained concentrations of zinc in the cage fluid throughout the study.

Antibacterial effect of zinc oxide in vitro.

Antibacterial activity, zinc concentrations and pH were measured in Müller-Hinton broth containing different amounts of zinc oxide and inoculated with Staphylococcus aureus (10(6) colony forming units/ml). The minimum inhibitory concentrations (MIC) of zinc oxide to different clinical isolates were determined using the Müller-Hinton agar dilution tests. Gram-positive bacteria were most susceptible.

The extent of coprophagy in rats with differing iron status and its effect on iron absorption.

The purpose of this study was to determine the prevalence of coprophagy in rats with differing iron status and its effect on the measurement of iron absorption from test meals with and without bran. Two experiments were performed using radioisotope-labelled microspheres added as a non-digestible marker for the ingested faeces and the diet and 59Fe added as a marker for the nonhaem iron in the test meal. In this study, coprophagy occurred at group mean rates of between 5 and 22% and was independent of the iron status of the rats or the presence or absence of bran in the diet.