Background And Objectives: High-angle Class II malocclusion is considered challenging to treat to a stable result and, although studies report treatment outcome in terms of morphology, patient satisfaction has not been addressed. The objectives of the present study were to examine patients' motives for treatment and satisfaction with the results.
Material And Methods: A structured questionnaire was distributed 3 years post-operatively to 93 consecutively treated patients with an initial diagnosis of mandibular-plane angle (ML/NSL) ≥34.
Am J Orthod Dentofacial Orthop
May 2020
Introduction: The purpose of this study was to compare treatment outcomes for anterior occlusion and vertical skeletal stability after maxillary or mandibular surgery for correction of Class II malocclusion with a mild to moderate open bite.
Methods: The records of 57 consecutive patients were retrieved; 30 had undergone 1-piece Le Fort I osteotomy, and 27 had undergone a bilateral sagittal split osteotomy (BSSO), without additional surgery. Lateral cephalograms at 6 stages were available (pretreatment to 3 years postsurgery).
Background And Objectives: High-angle skeletal Class II malocclusion is one of the most challenging dentofacial deviations to treat and, in adults, a combination of orthodontic treatment and bimaxillary orthognathic surgery is often indicated. This study examines the rate of clinically significant relapse and whether a genioplasty affects the treatment outcome of high-angle Class II malocclusions.
Material And Methods: Cephalometric tracings of 36 consecutively treated high-angle Class II patients were evaluated from pre-surgery to 3 years post-surgery.
Objective: To investigate whether individuals with high and low mandibular plane angles, respectively, have different patterns of long-term dental arch changes in adulthood.
Subjects And Methods: The material comprised 16 low-angle (≤ 24.4 degree) and 10 high-angle individuals (≥38.
Purpose: To investigate surgical outcome, long-term stability, the time course of relapse, neurosensory disturbances, and patient satisfaction after BSSO for correction of mandibular asymmetry. Another objective was to examine whether osteotomies for transverse rotation of the distal segment represent an increased risk for nerve injury.
Subjects And Methods: In a retrospective study lateral and postero-anterior cephalograms, information from patient files and questionnaires were analysed for 38 patients having more than 4 mm asymmetry at the chin pre-treatment (mean 8.
J Craniomaxillofac Surg
July 2014
Aim: To examine factors associated with patients' decision to decline surgery.
Material/methods: Of 470 consecutive patients referred to the University of Oslo from 2007 to 2009, a sample of 160 subjects who had not undergone surgery was identified and contacted. 236 operated patients from the same period served as a comparison group.
Aims: To survey retention protocols and need for practical retention guidelines among orthodontists in Norway and to compare the results with similar studies in other countries.
Methods: A questionnaire was mailed to all members of the Norwegian Association of Orthodontists. It included questions about their background and their current retention protocol, as well as their perceived need for common retention guidelines.
This study aimed to assess infraocclusion, root resorption and restorations and their importance for the prognosis of retained primary mandibular molars lacking successors. The sample comprised 188 persisting primary mandibular second molars in 111 subjects, 48 males and 63 females, with a mean age of 12.6 years.
View Article and Find Full Text PDFObjective: To analyze the impact of surgical change in anterior face height and skeletal relapse on the long-term soft tissue profile.
Materials And Methods: Cephalometric radiographs of 81 patients taken before surgery and at five time points during a 3-year follow-up period were analyzed. All patients had Le Fort I and bilateral sagittal split osteotomies.
Purpose: The aim was to compare outcome after extraoral vertical subcondylar osteotomy (EVSO) with rigid fixation and bilateral sagittal split osteotomy (BSSO) for correction of mandibular prognathism. The objectives were to examine treatment factors, postoperative results, and long-term stability. The surgical technique for EVSO is presented in detail.
View Article and Find Full Text PDFObjective: To quantify the relative soft tissue profile response to the skeletal changes resulting from bimaxillary surgery to correct Class III malocclusion in patients with different vertical incisor relationships presurgery.
Materials And Methods: The sample comprised lateral cephalograms of 80 consecutive patients before and 2 months after surgery. All patients had one-piece Le Fort I and bilateral sagittal split osteotomies.
Changes in the occlusion after orthodontic treatment have in several studies been analyzed by the use of the PAR Index developed by Shaw & Richmond. The use of the PAR Index has been shown by O'Brien & Shaw to be a reliable and reproducible method to evaluate orthodontic treatment results. The purpose of the study was to examine the long-range orthodontic treatment outcome by following a group of patients into adulthood to the age of 31 years.
View Article and Find Full Text PDFAm J Orthod Dentofacial Orthop
April 2011
Aim: The aim of this study was to evaluate the upper airway changes after simultaneous maxillary advancement/impaction and mandibular setback in skeletal Class III malocclusion.
Methods: The subjects included 76 patients whose treatment included 1-piece LeFort I and bilateral sagittal split osteotomies. Lateral cephalograms were taken before surgery and 2 months and 3 years postoperatively.
Am J Orthod Dentofacial Orthop
April 2011
Introduction: Very few studies have addressed long-term development and risks associated with untreated malocclusion. The purpose of this study was to examine changes in occlusion in a lifelong perspective and to compare oral health and attitudes toward teeth among persons with malocclusion with those having normal occlusion.
Methods: In 1950 an epidemiologic survey of 2349 8-year-olds was conducted and included 4 intraoral photographs.
Am J Orthod Dentofacial Orthop
January 2011
Introduction: The purpose of this study was to evaluate long-term skeletal and occlusal stability after bimaxillary surgery to correct skeletal Class III malocclusion.
Methods: The sample comprised 81 consecutively treated patients. All subjects had received a combined 1-piece LeFort I and bilateral sagittal split ostotomies with rigid fixation between 1990 and 2003 and were followed for 3 years.
Background And Objectives: There is a lack of studies that have evaluated how different ways of organizing and financing orthodontic services perform with respect to access to care, and the cost of care. In Norway, orthodontic services for children and adolescents are partly financed by the state, and the size of the state subsidy depends on the severity of the malocclusion. Orthodontists have the freedom to establish a practice where they wish.
View Article and Find Full Text PDFThe purpose of the study was to investigate the relationship between root resorption and repair in human premolars that had been orthodontically intruded. The objective was to examine these processes related to time and root development. Seventy-six premolars were divided into subgroups: 33 teeth were intruded and then extracted (G1); 25 teeth were intruded and then left in situ for varying periods before extraction (G2); 18 teeth served as the controls (G3).
View Article and Find Full Text PDFObjective: To analyze occlusal changes occurring between the ages of 8 and 65 years in persons with anterior and/or posterior crossbite at the age of 8; to examine their attitudes toward dental appearance and their experiences related to their own teeth.
Sample And Methods: Of the 81 people we contacted who had been documented as having crossbite as 8-year-olds in 1950, 21 agreed to participate in this follow-up study. Their occlusal conditions had been documented initially by intraoral photographs in 1950, and a clinical examination including facial photographs, further occlusal photographs and an interview took place in 2007.
Objectives: To analyze changes in occlusion between the ages of 8 and 65 years in persons with a deep overbite at the age of 8 who did not receive orthodontic treatment. To describe their experiences regarding their own dentition as well as their opinions on dental esthetics and oral health. To compare these findings with those of the Normal Occlusion (N-Group) described in Part 1.
View Article and Find Full Text PDFAm J Orthod Dentofacial Orthop
July 2008
Introduction: The purpose of this retrospective cephalometric study was to evaluate the long-term vertical stability of anterior open-bite correction by 1-piece Le Fort I osteotomy and rigid fixation.
Methods: The sample comprised 40 consecutively treated patients from the files of the Department of Orthodontics, University of Oslo, Norway. All subjects had received a 1-piece Le Fort I osteotomy as the only surgical procedure from 1990 through 1998 and were followed for 3 years according to a protocol for data collection.
Objective: To analyze occlusal changes between the ages of 8 and 65 years in 18 persons with normal occlusion at the age of 8 (N-group), to describe their attitudes toward dental esthetics and their experiences regarding their dentition.
Material And Methods: The N-group is considered as the reference group in comparison with malocclusion groups that will be presented in subsequent articles. Documentation is based on intraoral photographs and personal interviews.
The purpose of this study was to evaluate the outcome of a scheme for provision of orthognathic surgery by examining whether patients' expectations were fulfilled as well as their opinions about the result of treatment and side-effects. Data were obtained during a pre-planned 3-year follow-up clinical examination which included the administration of patient questionnaires. Of 583 subjects (281 females, 235 males; mean age 27.
View Article and Find Full Text PDFAm J Orthod Dentofacial Orthop
December 2004
The objectives of the present prospective longitudinal study were to establish the survival and success rates for premolars with partly developed roots transplanted according to a set protocol, and to analyze the effect of varying pre-surgery root development on final root length. Standardized periapical radiographs of 132 consecutively transplanted premolars were obtained at predetermined intervals over a 4-year follow-up period. Survival and success rates were calculated on the basis of presence of teeth and recording of defined radiological variables, respectively.
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