A principal components analysis: how pneumatization and edentulism contribute to maxillary atrophy.
Oral Dis
; 23(1): 55-61, 2017 Jan.
Article
en En
| MEDLINE
| ID: mdl-27537271
ABSTRACT
OBJECTIVE:
The aim of this retrospective cohort study was to investigate the role of sinus pneumatization and residual ridge resorption in maxillary bone loss in 400 computed tomography (CT) scans. MATERIALS ANDMETHODS:
In 200 dentate and 200 edentulous patients, both sinuses were analysed using CT scans. The image analysis sequence consisted of manual placement of 24 reference points, followed by automated segmentation and final manual refinement. Finally, a principal components analysis was performed.RESULTS:
A total of 788 sinuses were included into the analysis. The edentulous group (98 female 67.77 ± 11.28 years, 99 male 65.22 ± 9.87) was significantly older than the group with teeth (99 female 46.89 ± 16.77 years, 96 male 49.74 ± 16.2). Female and male patients did not differ regarding age. The alveolar height differed significantly between the groups (edentulous 7.1 ± 4.3 mm, with teeth 9.7 ± 4.1 mm), but not between gender (female 8.3 ± 4.4 mm, male 8.5 ± 4.4 mm). Principal components analysis was able to explain 90% of the variation in sinus morphology.CONCLUSIONS:
Prolonged edentulism in the maxillary molar region leads to centripetal and to minor degrees centrifugal ridge resorption. Minor pneumatization occurs in the sinus walls, but the sinus depth underlies the anatomical variation independent of dentition.Palabras clave
Texto completo:
1
Banco de datos:
MEDLINE
Asunto principal:
Enfermedades Maxilares
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Pérdida de Hueso Alveolar
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Boca Edéntula
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Maxilar
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Seno Maxilar
Tipo de estudio:
Observational_studies
/
Risk_factors_studies
Límite:
Aged
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Female
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Humans
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Male
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Middle aged
Idioma:
En
Año:
2017
Tipo del documento:
Article