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Liselotte Sonnesen - One of the best experts on this subject based on the ideXlab platform.

  • Upper cervical spine and Craniofacial Morphology in hypohidrotic ectodermal dysplasia.
    European archives of paediatric dentistry : official journal of the European Academy of Paediatric Dentistry, 2018
    Co-Authors: Liselotte Sonnesen, A Jasemi, Hans Gjørup, J Daugaard-jensen
    Abstract:

    AIM Morphological deviations in the upper cervical spine and Craniofacial Morphology in patients with X-linked hypohidrotic ectodermal dysplasia (XLHED) were compared to non-syndromic controls. METHODS All children and adolescents with genetically verified XLHED, registered at the Resource Centres for Oral Health in Rare Diseases, who met the inclusion criteria, were included. The group thus comprised 15 XLHED patients (3 girls and 12 boys, aged 8-16 years, mean 11.2 years). The control group comprised 22 non-syndromic pre-orthodontic children (14 girls and 8 boys aged 9-16 years, mean 11.9 years) with agenesis of one tooth, neutral occlusion and normal Craniofacial Morphology. The Craniofacial and upper spine Morphology was analysed on lateral cephalograms by standard methods. Differences between XLHED patients and controls were tested and adjusted for age and gender by multiple regression analyses. RESULTS Morphological deviations in the upper spine occur significantly more often in XLHED patients compared to controls (60 vs. 9.1%; p 

  • Cervical Vertebral Column Morphology Associated with Head Posture and Craniofacial Morphology
    Seminars in Orthodontics, 2012
    Co-Authors: Liselotte Sonnesen
    Abstract:

    Significant associations have previously been described between Craniofacial Morphology, posture of the head and neck, and obstruction of the upper airways as seen in patients with obstructive sleep apnea. Morphological deviations in the cervical vertebral column have also been described in relation to Craniofacial syndromes and to cleft lip and/or palate. New findings have been made concerning associations between fusion of the cervical vertebral column and Craniofacial Morphology, including the cranial base, in patients with severe skeletal malocclusions. Another new finding was the association between fusion of the cervical vertebral column and head posture and between fusion of the cervical vertebral column and obstructive sleep apnea. Accordingly, it is suggested that fusion of the cervical vertebral column is associated with the development and function of the Craniofacial Morphology in the sagittal, vertical, and transversal planes.

  • Associations between the Cervical Vertebral Column and Craniofacial Morphology.
    International Journal of Dentistry, 2010
    Co-Authors: Liselotte Sonnesen
    Abstract:

    Aim. To summarize recent studies on morphological deviations of the cervical vertebral column and associations with Craniofacial Morphology and head posture in nonsyndromic patients and in patients with obstructive sleep apnoea (OSA). Design. In these recent studies, visual assessment of the cervical vertebral column and cephalometric analysis of the Craniofacial skeleton were performed on profile radiographs of subjects with neutral occlusion, patients with severe skeletal malocclusions and patients with OSA. Material from human triploid foetuses and mouse embryos was analysed histologically. Results. Recent studies have documented associations between fusion of the cervical vertebral column and Craniofacial Morphology, including head posture in patients with severe skeletal malocclusions. Histological studies on prenatal material supported these findings. Conclusion. It is suggested that fusion of the cervical vertebral column is associated with development and function of the Craniofacial Morphology. This finding is expected to have importance for diagnostics and elucidation of aetiology and thereby for optimal treatment.

  • the neurocranial and Craniofacial Morphology in children with solitary median maxillary central incisor smmci
    Orthodontics & Craniofacial Research, 2008
    Co-Authors: F Tabatabaie, Liselotte Sonnesen, Inger Kjær
    Abstract:

    Structed Abstract Authors –  Tabatabaie F, Sonnesen L, Kjaer I Objectives –  The purpose of this study was to describe the neurocranial and Craniofacial Morphology on profile radiographs of children with single median maxillary central incisor (SMMCI). Design –  Cephalometric analyses of neurocranium and Craniofacial Morphology on profile radiographs. Setting and Sample Population –  Department of Orthodontics, School of Dentistry, University of Copenhagen. Thirteen children with SMMCI, 12 girls and one boy (7–17 years of age). Outcome Measure –  Cephalometric measurement were compared with normal standards using a paired t-test and Wilcoxon signed rank test. Results –  The size of the neurocranium (especially the length of the anterior cranial base), the maxillary prognathia, the maxillary inclination, the mandibular prognathia and the inclination of the mandibular incisors are significantly reduced in SMMCI. The mandibular inclination, the vertical jaw relationship, the alveolar bone prognathia in the upper jaw and the mandibular angle are significantly enlarged in SMMCI. Conclusion –  The present study showed that occurrence of SMMCI is a sign of a developmental anomaly associated with deviations in neurocranial size and shape and in Craniofacial Morphology.

  • The neurocranial and Craniofacial Morphology in children with solitary median maxillary central incisor (SMMCI)
    Orthodontics & craniofacial research, 2008
    Co-Authors: F Tabatabaie, Liselotte Sonnesen, Inger Kjær
    Abstract:

    The purpose of this study was to describe the neurocranial and Craniofacial Morphology on profile radiographs of children with single median maxillary central incisor (SMMCI). Cephalometric analyses of neurocranium and Craniofacial Morphology on profile radiographs. Department of Orthodontics, School of Dentistry, University of Copenhagen. Thirteen children with SMMCI, 12 girls and one boy (7-17 years of age). Cephalometric measurement were compared with normal standards using a paired t-test and Wilcoxon signed rank test. The size of the neurocranium (especially the length of the anterior cranial base), the maxillary prognathia, the maxillary inclination, the mandibular prognathia and the inclination of the mandibular incisors are significantly reduced in SMMCI. The mandibular inclination, the vertical jaw relationship, the alveolar bone prognathia in the upper jaw and the mandibular angle are significantly enlarged in SMMCI. The present study showed that occurrence of SMMCI is a sign of a developmental anomaly associated with deviations in neurocranial size and shape and in Craniofacial Morphology.

Inger Kjær - One of the best experts on this subject based on the ideXlab platform.

  • the neurocranial and Craniofacial Morphology in children with solitary median maxillary central incisor smmci
    Orthodontics & Craniofacial Research, 2008
    Co-Authors: F Tabatabaie, Liselotte Sonnesen, Inger Kjær
    Abstract:

    Structed Abstract Authors –  Tabatabaie F, Sonnesen L, Kjaer I Objectives –  The purpose of this study was to describe the neurocranial and Craniofacial Morphology on profile radiographs of children with single median maxillary central incisor (SMMCI). Design –  Cephalometric analyses of neurocranium and Craniofacial Morphology on profile radiographs. Setting and Sample Population –  Department of Orthodontics, School of Dentistry, University of Copenhagen. Thirteen children with SMMCI, 12 girls and one boy (7–17 years of age). Outcome Measure –  Cephalometric measurement were compared with normal standards using a paired t-test and Wilcoxon signed rank test. Results –  The size of the neurocranium (especially the length of the anterior cranial base), the maxillary prognathia, the maxillary inclination, the mandibular prognathia and the inclination of the mandibular incisors are significantly reduced in SMMCI. The mandibular inclination, the vertical jaw relationship, the alveolar bone prognathia in the upper jaw and the mandibular angle are significantly enlarged in SMMCI. Conclusion –  The present study showed that occurrence of SMMCI is a sign of a developmental anomaly associated with deviations in neurocranial size and shape and in Craniofacial Morphology.

  • The neurocranial and Craniofacial Morphology in children with solitary median maxillary central incisor (SMMCI)
    Orthodontics & craniofacial research, 2008
    Co-Authors: F Tabatabaie, Liselotte Sonnesen, Inger Kjær
    Abstract:

    The purpose of this study was to describe the neurocranial and Craniofacial Morphology on profile radiographs of children with single median maxillary central incisor (SMMCI). Cephalometric analyses of neurocranium and Craniofacial Morphology on profile radiographs. Department of Orthodontics, School of Dentistry, University of Copenhagen. Thirteen children with SMMCI, 12 girls and one boy (7-17 years of age). Cephalometric measurement were compared with normal standards using a paired t-test and Wilcoxon signed rank test. The size of the neurocranium (especially the length of the anterior cranial base), the maxillary prognathia, the maxillary inclination, the mandibular prognathia and the inclination of the mandibular incisors are significantly reduced in SMMCI. The mandibular inclination, the vertical jaw relationship, the alveolar bone prognathia in the upper jaw and the mandibular angle are significantly enlarged in SMMCI. The present study showed that occurrence of SMMCI is a sign of a developmental anomaly associated with deviations in neurocranial size and shape and in Craniofacial Morphology.

  • Face, palate, and Craniofacial Morphology in patients with a solitary median maxillary central incisor.
    European journal of orthodontics, 2001
    Co-Authors: Inger Kjær, Karin Binner Becktor, Jörg Lisson, Charlotte Gormsen, Bjørn G. Russell
    Abstract:

    The occurrence of a solitary median maxillary central incisor (SMMCI) is a very rare condition and might be a sign of a mild degree of holoprosencephaly. In this investigation, material from 10 patients, nine girls and one boy with a SMMCI (8-17 years of age) registered in orthodontic clinics was examined. The purpose was to evaluate the clinical characteristics and Craniofacial Morphology in this group of patients. Oral photographs, study casts, profile radiographs, and orthopantomograms were analysed. The study showed that this group of SMMCI patients were characterized by an indistinct philtrum, an arch-shaped upper lip, absence of the fraenulum of the upper lip, a complete or incomplete mid-palatal ridge, a SMMCI, and nasal obstruction or septum deviation. The Craniofacial Morphology of the nine girls, compared with normal standards for girls showed a short anterior cranial base, a short, retrognathic and posteriorly inclined maxilla, and a retrognathic and posteriorly inclined mandible. Furthermore, the sella turcica had a deviant Morphology in five of the 10 subjects. The results indicate that the presence of a SMMCI should not be considered as a simple dental anomaly, since it may be associated with other clinical characteristics and more complex Craniofacial malformations. It is therefore suggested that the SMMCI condition in future studies is classified according to clinical symptoms and Craniofacial Morphology.

  • Craniofacial Morphology in patients with Kallmann's syndrome with and without cleft lip and palate.
    The Cleft palate-craniofacial journal : official publication of the American Cleft Palate-Craniofacial Association, 1997
    Co-Authors: Kirsten Mølsted, Inger Kjær, Aleksander Giwercman, Søren Vesterhauge, Niels E. Skakkebæk
    Abstract:

    Kallmann's syndrome is characterized by the association of hypogonadotropic hypogonadism and anosmia or hyposmia. The principal endocrine defect of hypogonadotropic hypogonadism is a failure to secrete luteinizing hormone-releasing hormone (LHRH), resulting in underdevelopment of the pituitary gonadotropes and an inability to synthesize and release luteinizing hormone and follicle-stimulating hormone. The purpose of the present investigation was to describe the dentition and the Craniofacial Morphology in patients diagnosed with Kallmann's syndrome. The sample consisted of 11 patients, 2 of whom also had bilateral cleft lip and palate. Radiographic investigations, including cephalometry, were performed. Comparisons were made to normal individuals and to cleft lip individuals without Kallmann's syndrome. Dentition: tooth agenesis occurred more frequently in patients with Kallmann's syndrome. Craniofacial Morphology: Increased mandibular inclination and mandibular angulation were seen in Kallmann patients. When clefting also occurred, extreme retrognathism of both maxilla and mandible was seen, a deviation which seemingly worsened during growth. The anterior cranial base and the sphenoid bone showed an altered Morphology in one of the patients with Kallman's syndrome. An early diagnosis of Kallmann's syndrome is very important because the prognosis for endocrine treatment thereby improves, and therefore, it is recommended that the sense of smell be evaluated in patients with the Craniofacial Morphology described.

  • Craniofacial Morphology in patients with multiple congenitally missing permanent teeth
    European journal of orthodontics, 1994
    Co-Authors: Marianne Nodal, Inger Kjær, Beni Solow
    Abstract:

    The purpose of this study was to examine the association between the number of congenitally missing permanent teeth, excluding third molars, and the Craniofacial Morphology. The sample comprised 118 children with five or more congenitally missing teeth. Twenty-seven reference points were digitized from lateral cephalometric radiographs and 13 angular measurements of Craniofacial Morphology were calculated. After an initial analysis, the sample was divided into two subsamples, one with 5-12 missing teeth and the other with 13-21 missing teeth. Within each subsample there was no significant association between number of missing teeth and the angular variables, but a comparison between the two subsamples showed significantly smaller mandibular plane inclination (NSL/ML, NL/ML) and gonial angle (RL/ML), and a more prognathic mandible (s-n-pg) in the subsample with more than 12 teeth missing. It is suggested that the difference in Morphology could be due to a reduced vertical development of the lower face, caused by a reduced occlusal support in the subsample with more than 12 congenitally missing teeth.

Stavros Kiliaridis - One of the best experts on this subject based on the ideXlab platform.

  • masseter muscle thickness and mechanical advantage in relation to vertical Craniofacial Morphology in children
    Acta Odontologica Scandinavica, 2008
    Co-Authors: Maria Charalampidou, Heidrun Kjellberg, Ioanna Georgiakaki, Stavros Kiliaridis
    Abstract:

    Objective. To investigate the relationship between vertical Craniofacial Morphology and masseter muscle thickness and mechanical advantage in children. Material and methods. The sample comprised 72 children (36 F, 36 M), 8.5–9.5 years of age, with various malocclusions and no previous orthodontic treatment. The thickness of the masseter was measured bilaterally by means of ultrasonography, and the recordings were performed both in relaxation and under contraction. Mechanical advantage was measured on the lateral cephalograms as the ratio between the masseter moment and the bite force moment arms. Two linear ratios and three angular measurements were used to describe vertical Craniofacial Morphology. Results. The mean masseter thickness was greater in the male group (p<0.05) in both relaxed and contracted conditions. There were no significant sex differences for the mechanical advantage or for the measurements of vertical Craniofacial Morphology. In females, there is a positive association between masseter...

  • Masseter muscle thickness and mechanical advantage in relation to vertical Craniofacial Morphology in children.
    Acta odontologica Scandinavica, 2008
    Co-Authors: Maria Charalampidou, Heidrun Kjellberg, Ioanna Georgiakaki, Stavros Kiliaridis
    Abstract:

    Objective. To investigate the relationship between vertical Craniofacial Morphology and masseter muscle thickness and mechanical advantage in children. Material and methods. The sample comprised 72 children (36 F, 36 M), 8.5–9.5 years of age, with various malocclusions and no previous orthodontic treatment. The thickness of the masseter was measured bilaterally by means of ultrasonography, and the recordings were performed both in relaxation and under contraction. Mechanical advantage was measured on the lateral cephalograms as the ratio between the masseter moment and the bite force moment arms. Two linear ratios and three angular measurements were used to describe vertical Craniofacial Morphology. Results. The mean masseter thickness was greater in the male group (p

  • Masseter muscle thickness and mechanical advantage in relation to vertical Craniofacial Morphology in children.
    Acta odontologica Scandinavica, 2008
    Co-Authors: Maria Charalampidou, Heidrun Kjellberg, Ioanna Georgiakaki, Stavros Kiliaridis
    Abstract:

    To investigate the relationship between vertical Craniofacial Morphology and masseter muscle thickness and mechanical advantage in children. The sample comprised 72 children (36 F, 36 M), 8.5-9.5 years of age, with various malocclusions and no previous orthodontic treatment. The thickness of the masseter was measured bilaterally by means of ultrasonography, and the recordings were performed both in relaxation and under contraction. Mechanical advantage was measured on the lateral cephalograms as the ratio between the masseter moment and the bite force moment arms. Two linear ratios and three angular measurements were used to describe vertical Craniofacial Morphology. The mean masseter thickness was greater in the male group (p<0.05) in both relaxed and contracted conditions. There were no significant sex differences for the mechanical advantage or for the measurements of vertical Craniofacial Morphology. In females, there is a positive association between masseter muscle thickness and its mechanical advantage. Multiple regression analysis showed a positive association between posterior to anterior facial height ratio in both genders and a negative association between masseter thickness and the intermaxillary angle in females. There is a significant association between posterior to anterior facial height and the masseter muscle in children. The importance of the masseter muscle is more evident in the vertical facial Morphology of females.

  • effects of masticatory muscle function on Craniofacial Morphology in growing ferrets mustela putorius furo
    European Journal of Oral Sciences, 2003
    Co-Authors: Stavros Kiliaridis
    Abstract:

    Studying the effects of masticatory muscle function on Craniofacial Morphology in animal models with different masticatory systems is important for further understanding of related issues in humans. Forty 5-wk-old male ferrets were equally divided into two groups. One group was fed a diet of hard pellets (HDG) and the other group was fed the same diet but softened with water (SDG). Lateral and dorsoventral cephalograms were taken on each group after 6 months. Cephalometric measurements were performed by digital procedures. For SDG ferrets, the hard palate plane was more distant from the cranial base plane, and canines were more proclined compared with HDG ferrets. The SDG ferrets were also found to have smaller interfrontal and interparietal widths, and a slenderer zygomatic arch than the HDG ferrets. In the mandible, the coronoid process was generally shorter and narrower for the SDG ferrets. The effects of the altered masticatory muscle function on Craniofacial Morphology in growing ferrets seemed to differ from those previously reported in other animal models studied under similar experimental conditions. Such differences in the effects are presumably related to the differences in the mode of mastication, Craniofacial anatomy and growth pattern in different animal models.

A S C Ching - One of the best experts on this subject based on the ideXlab platform.

  • cephalometric assessment of Craniofacial Morphology in chinese patients with obstructive sleep apnoea
    Respiratory Medicine, 2003
    Co-Authors: David Hui, A S Y Chu, Joan P C Fok, Michael C H Chan, Dominic K L Choy, Christopher K W Lai, Anil T Ahuja, A S C Ching
    Abstract:

    Abstract Objective : To compare the differences in Craniofacial Morphology in Chinese patients with and without obstructive sleep apnoea (OSA). Method : We performed lateral cephalometric radiographs on 94 consecutive patients (77 males) referred with snoring or other symptoms suggestive of OSA for polysomnography (PSG). Significant OSA was defined as an apneoa-hypopnoea index (AHI) ≥ 10/h of sleep on overnight PSG. The cephalometric data were compared between those with and without significant OSA. Results (mean±SD): There were 69 (56 males) with significant OSA with mean age 53±12 years, body mass index (BMI) 28.6±5.0kg/m 2 , AHI 36.5±20.6/h, and minimum S aO 2 76±14%. There were 25 controls (21 males) without significant OSA with similar age and BMI. The mandibular plane to hyoid bone distance (MPH) and the perpendicular distance from hyoid bone to the line connecting C3 vertebra and retrognathion (HH1) were significantly longer in the OSA patients. The angle measurement from sella to nasion to point A (SNA) was smaller in the OSA group. MPH distance was the only independent variable for significant OSA with an odds ratio of 3.47 (95% CI 1.39–8.66). Abnormalities of the MPH and SNA were more marked in the OSA patients with BMI ≥30kg/m 2 . Conclusions : Significant differences in Craniofacial Morphology are noted between OSA patients and non-apnoeic controls. An inferiorly positioned hyoid bone and a retropositioned maxilla may predispose obese patients to more severe OSA.

A Jasemi - One of the best experts on this subject based on the ideXlab platform.

  • Upper cervical spine and Craniofacial Morphology in hypohidrotic ectodermal dysplasia.
    European archives of paediatric dentistry : official journal of the European Academy of Paediatric Dentistry, 2018
    Co-Authors: Liselotte Sonnesen, A Jasemi, Hans Gjørup, J Daugaard-jensen
    Abstract:

    AIM Morphological deviations in the upper cervical spine and Craniofacial Morphology in patients with X-linked hypohidrotic ectodermal dysplasia (XLHED) were compared to non-syndromic controls. METHODS All children and adolescents with genetically verified XLHED, registered at the Resource Centres for Oral Health in Rare Diseases, who met the inclusion criteria, were included. The group thus comprised 15 XLHED patients (3 girls and 12 boys, aged 8-16 years, mean 11.2 years). The control group comprised 22 non-syndromic pre-orthodontic children (14 girls and 8 boys aged 9-16 years, mean 11.9 years) with agenesis of one tooth, neutral occlusion and normal Craniofacial Morphology. The Craniofacial and upper spine Morphology was analysed on lateral cephalograms by standard methods. Differences between XLHED patients and controls were tested and adjusted for age and gender by multiple regression analyses. RESULTS Morphological deviations in the upper spine occur significantly more often in XLHED patients compared to controls (60 vs. 9.1%; p 

  • Tooth agenesis and Craniofacial Morphology in pre-orthodontic children with and without morphological deviations in the upper cervical spine
    World Journal of Stomatology, 2016
    Co-Authors: A Jasemi
    Abstract:

    Tooth agenesis and Craniofacial Morphology in pre-orthodontic children with and without morphological deviations in the upper cervical spine