Primate experiments on mandibular growth direction

Tomer, Britta S.; Harvold, Egil P.

doi:10.1016/0002-9416(82)90490-0

Cited by 65 publications

(25 citation statements)

References 13 publications

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“…Although there is significant evidence that total or partial obstruction of nasal breathing results in mouth breathing, the latter's effect on dentofacial growth and development is still obscure (14)(15)(16)(17). The best known reported topic is nasal obstruction due to adenoid hypertrophy in the early childhood causing dentofacial changes (15)(16)(17)(18).…”

Section: Discussionmentioning

confidence: 99%

“…The best known reported topic is nasal obstruction due to adenoid hypertrophy in the early childhood causing dentofacial changes (15)(16)(17)(18). Specifically, it has been stated that chronic nasal obstruction leads to mouth breathing, which causes altered tongue and mandible positions.…”

Section: Discussionmentioning

confidence: 99%

“…These dentofacial traits have repeatedly been attributed to restricted nasorespiratory function. It is generally believed that environmental factors can exert subtle or dramatic effects upon dentofacial morphology, depending upon their magnitude, duration, and time of occurrence (16,17,19). It would appear that chronic nasal obstruction, not related to the adenoids (nasal septal deformity, chronic rhinitis, external nasal deformity, etc.…”

Section: Discussionmentioning

confidence: 99%

“…), can lead to a similar elongated lower face. Various possible mechanisms were reported in order to explain the bony structural changes (16,17). Nasal breathing can exert a dramatic effect upon the development of the dentofacial complex.…”

Section: Discussionmentioning

confidence: 99%

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Modification of the maxillary bone in adults with nasal polyposis: a CT morphometric study

Serter

Günhan²,

Can³

et al. 2009

Diagn Interv Radiol

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Chronic nasal obstruction is a common complaint in otorhinolaryngology outpatient practice (1, 2). Causes of nasal obstruction, conditioning mouth breathing, include nasoseptal deviation, hypertrophied lower turbinates, adenoids and tonsils, chronic or especially allergic rhinitis, nasal trauma, congenital nasal deformities, foreign bodies, nasal polyps, and tumors (3). One of the most common causes of nasal obstruction in adults is nasal polyposis (NP) (1, 2). Computed tomography (CT) is the ideal imaging method to investigate nasal and paranasal sinus diseases (4, 5).In paranasal sinus CT scans, we have recently observed that the plane angle between the maxillary alveolar process (MAP) and palatine bone (PB) is increased and the depth of maxillary arch is decreased in many cases with NP.Pediatric orthodontics literature concerning how nasal obstruction relates to dentofacial development is extensive and whether a cause-effect relationship exists has been debated for over a century (6)(7)(8). Although recent studies suggest a relationship between chronic nasal obstruction and dentofacial deformities, many questions remain unanswered (9, 10). However, there is very limited data on the morphometry of the maxillary arch in adults with nasal obstruction.The objectives of the present study are to correlate the airway variables obtained by paranasal sinus CT findings of both patients with chronic nasal airway obstruction and a control group in adult population, and to investigate whether the bony structure of the airway is affected or not. Materials and methodsForty NP cases that were followed up by an otorhinolaryngologist at least for 1 year were included in this retrospective study. The control group consisted of 40 subjects that were randomly selected from our CT database. Control subjects had normal findings or trivial pathologies, which did not cause any nasal airway obstruction (e.g., minimal mucosal thickening, small retention cyst) reported in paranasal CT scans. Both groups were similar regarding the age and weight. The diagnosis of NP was established by direct visualization via nasal endoscopy.Paranasal sinus CT scans of all subjects were performed with the same parameters. A single slice spiral unit (Siemens Emotion, Siemens, Erlangen, Germany) was used for imaging. Unenhanced, 3 mm thick coronal and axial contiguous slices (pitch, 1.5) were obtained in the prone position with the head hyperextended. Although images were originally obtained with soft tissue and bone windows, we made the calculations on a single set of images obtained in the bone algorithm (window width, 2000-3000; window level, 400-760). The maxillary and palatine bones were evaluated on coronal images. The plane angle between MAP and There is yet no study in the literature measuring the morphometry of maxillary bone in NP. The objectives of this study are to correlate the airway variables obtained by CT findings of both chronic nasal airway obstruction and control group in an adult population, and to investigate whether the bony structur...

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

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Modification of the maxillary bone in adults with nasal polyposis: a CT morphometric study

Serter

Günhan²,

Can³

et al. 2009

Diagn Interv Radiol

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“…Anterior olarak yer de¤ifltiren kondil retrodiskal dokular› esnetir ve bu kondil ve fossan›n karfl›t yüzeylerinde yeni kemik oluflumunu tetikler. Bu görüfl do¤rultusunda, aktivator tedavisi ile kondiler büyüme yönü (9,30,33,34,44) ile glenoid fossan›n do¤al bü-yüme yönü de¤ifltirilerek sagittal yöndeki intermaksiller iliflki düzeltilir (2, 38-40, 43, 44).…”

Section: Discussionunclassified

Aktivatör Tedavisi Sagittal Mandibular Boyut ve Glenoid Fossa Konumunu Değiştirir mi? Klinik Manyetik Rezonans Görüntüleme Çalışması

Gökalp¹

2007

Turkish Journal of Orthodontics

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Anatomical Basis of Sleep-Related Breathing Abnormalities in Children With Nasal Obstruction

Finkelstein¹,

Wexler²,

Berger³

et al. 2000

Arch Otolaryngol Head Neck Surg

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A number of anatomical abnormalities may contribute to sleep-related abnormal breathing in otherwise normal children with nasal obstruction. Our results suggest that symptomatic children show some of the same skeletal and soft-tissue configurations that are found in adults with obstructive sleep apnea. While adenoidectomy is generally an effective treatment in children with obstructive sleep-related breathing abnormalities, the underlying craniofacial variances that remain after adenoidectomy may predispose these patients to redevelopment of obstructive breathing abnormalities in adulthood.

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Primate experiments on mandibular growth direction

Cited by 65 publications

References 13 publications

Modification of the maxillary bone in adults with nasal polyposis: a CT morphometric study

Modification of the maxillary bone in adults with nasal polyposis: a CT morphometric study

Aktivatör Tedavisi Sagittal Mandibular Boyut ve Glenoid Fossa Konumunu Değiştirir mi? Klinik Manyetik Rezonans Görüntüleme Çalışması

Anatomical Basis of Sleep-Related Breathing Abnormalities in Children With Nasal Obstruction

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