The Experts below are selected from a list of 642 Experts worldwide ranked by ideXlab platform
Wei Cheong Ngeow - One of the best experts on this subject based on the ideXlab platform.
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Cone Beam Computed Tomography Assessment of the Maxillary Incisive Canal and Foramen: Considerations of Anatomical Variations When Placing Immediate Implants
PloS one, 2015Co-Authors: Samah M. Al-amery, Phrabhakaran Nambiar, Marhazlinda Jamaludin, Jacob John, Wei Cheong NgeowAbstract:Introduction:The maxillary Incisive canal connects the roof of the oral cavity with the floor of nasal cavity and has the Incisive and nasal foramina respectively at its two opposite ends. Its close proximity with the anterior incisors affects one's ability to place immediate implants in ideal position. Objective:To avoid causing complication, variations in their dimensions were studied. Material and Methods: Images of ninety Mongoloids patients examined with i-CAT Cone Beam Computed Tomography were included. The sizes of the nasopalatine Foramen, the Incisive canal and Foramen, and anterior maxillary bone thickness were measured. The direction and course of the canals were assessed. Results:The mean labiopalatal and mesiodistal measurements of the Incisive Foramen were 2.80mm and 3.49 mm respectively, while the labiopalatal width of the nasal Foramen was 6.06mm. The Incisive canal was 16.33mm long and 3.85 mm wide. The anterior maxillary bone has an average thickness of 7.63 mm. The dimensions of the Incisive Foramen and Incisive canal, and anterior maxillary bone thickness demonstrated gender differences with males showing greater values. The anterior maxillary bone thickness was affected by age but this difference was not observed in canal dimensions. The majority of subjects have a funnel shape-like Incisive canal with the broader opening located at its superior. They seem to have a longer slanted-curve canal with one channel at its middle portion and a narrower Incisive Foramen opening than those reported elsewhere. Conclusions:This study found that gender is an important factor that affected the characteristics of the IC and the amount of bone anterior to it. Male generally had bigger IC and thicker anterior bone. In addition, the anterior maxillary bone thickness was affected by aging, where it becomes thinner with increased age even though the subjects were fully dentate.
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Measurement of Incisive Foramen (blue line), nasal Foramen (red line), Incisive diameter (green line), and the Incisive Foramen location (yellow line).
2015Co-Authors: Samah M. Al-amery, Phrabhakaran Nambiar, Marhazlinda Jamaludin, Jacob John, Wei Cheong NgeowAbstract:Measurement of Incisive Foramen (blue line), nasal Foramen (red line), Incisive diameter (green line), and the Incisive Foramen location (yellow line).
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Differences in the distance from the Incisive Foramen to the most anteroinferior point of the cortical plate of labial bone in subjects of different age groups.
2015Co-Authors: Samah M. Al-amery, Phrabhakaran Nambiar, Marhazlinda Jamaludin, Jacob John, Wei Cheong NgeowAbstract:Differences in the distance from the Incisive Foramen to the most anteroinferior point of the cortical plate of labial bone in subjects of different age groups.
Marios Loukas - One of the best experts on this subject based on the ideXlab platform.
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The clinical anatomy of the Incisive Foramen
The FASEB Journal, 2006Co-Authors: Theodoros Kapos, Robert F. Wright, Marios LoukasAbstract:Several reports exist, both in textbooks and in the literature, which describe, negative functional and cosmetic complications, associated with improper placement of anterior maxillary denture teet...
S. F. Dos Reis - One of the best experts on this subject based on the ideXlab platform.
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A new subspecies of Proechimys iheringi Thomas (Rodentia: Echimyidae) from the state of Rio de Janeiro, Brazil
1993Co-Authors: Leila Maria Pessôa, S. F. Dos ReisAbstract:Described a new subspecies of Proechimys iberingi based on specimens collected in the coastal sand plains of the state of Rio de Janeiro, southeastern Brazil. This new subspecies can be distinguished by a combination of traits that include an absence of cinnamon ground color in the subapical zone of setiform hairs, tail longer than head and body with a whitish brush in the tip, bullae large and well inflated, and yv the structure of the septum of the Incisive Foramen, where the vomer is visible ventrally between the premaxillae and maxillae
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A new species of spiny rat genus Proechimys, subgenus Trinomys (Rodentia: Echimyidae)
1992Co-Authors: Leila Maria Pessôa, J.a. De Oliveira, S. F. Dos ReisAbstract:Described a new species of spiny rat genus Proechimys, subgenus Trinomys based on seven specimens collected in Conceicao do Mato Dentro, state of Minas Gerais, southeastern Brazil. The diagnostic characters of the new species are an elongate and posteriorly wide Incisive Foramen and a baculum with weakly developed apical wings. This new species differs from previously described species of the subgenus by a set of characters including the color of the pelage and skull, teeth, and bacular morphology
S. Ren - One of the best experts on this subject based on the ideXlab platform.
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Bony defect of palate and vomer in submucous cleft palate
2015Co-Authors: S. Ren, Xiang Zhou, Z. SunAbstract:The aim of this study was to visualize bony defects of the palate and vomer in submucous cleft palate patients (SMCP) by three-dimensional (3D) computed tomography (CT) reconstruction and to classify the range of bony defects. Forty- eight consecutive non-operated SMCP patients were included. Diagnosis was based on the presence of at least one of three classical signs of SMCP: bifid uvula, a translucent zone in the midline of the soft palate, and a palpable 'V' notch on the posterior border of the bony palate. Patients were imaged using spiral CT. 3D reconstruction models were created of the palate and vomer. The sagittal extent of the bony cleft in SMCP was classified into four types: type I, no V-shaped hard palate cleft (8.3%); type II, cleft involving the partial palate (43.8%); type III, cleft involving the complete palate and extending to the Incisive Foramen (43.8%); type IV, cleft involving the complete palate and the alveolar bone (4.2%). The extent of the vomer defect was classified into three types: type A, vomer completely fused with the palate (8.3%); type B, vomer partially fused with the palate (43.8%); type C, vomer not fused with the palate up to the Incisive Foramen (47.9%). Significant variability in hard palate defects in SMCP is the rule rather than the exception. The association of velopharyngeal insufficiency with anatomical malformations may be complex.
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Bony defect of palate and vomer in submucous cleft palate patients.
International journal of oral and maxillofacial surgery, 2014Co-Authors: S. Ren, Xiang Zhou, Z.p. SunAbstract:The aim of this study was to visualize bony defects of the palate and vomer in submucous cleft palate patients (SMCP) by three-dimensional (3D) computed tomography (CT) reconstruction and to classify the range of bony defects. Forty-eight consecutive non-operated SMCP patients were included. Diagnosis was based on the presence of at least one of three classical signs of SMCP: bifid uvula, a translucent zone in the midline of the soft palate, and a palpable 'V' notch on the posterior border of the bony palate. Patients were imaged using spiral CT. 3D reconstruction models were created of the palate and vomer. The sagittal extent of the bony cleft in SMCP was classified into four types: type I, no V-shaped hard palate cleft (8.3%); type II, cleft involving the partial palate (43.8%); type III, cleft involving the complete palate and extending to the Incisive Foramen (43.8%); type IV, cleft involving the complete palate and the alveolar bone (4.2%). The extent of the vomer defect was classified into three types: type A, vomer completely fused with the palate (8.3%); type B, vomer partially fused with the palate (43.8%); type C, vomer not fused with the palate up to the Incisive Foramen (47.9%). Significant variability in hard palate defects in SMCP is the rule rather than the exception. The association of velopharyngeal insufficiency with anatomical malformations may be complex.
Vani Chappidi - One of the best experts on this subject based on the ideXlab platform.
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Maxillary Incisive Canal Characteristics: A Radiographic Study Using Cone Beam Computerized Tomography
Radiology research and practice, 2019Co-Authors: Penala Soumya, Pradeep Koppolu, Krishnajaneya Reddy Pathakota, Vani ChappidiAbstract:Background. The Incisive canal located at the midline, posterior to the central incisor, is an important anatomic structure of this area to be considered while planning for immediate implant placement in maxillary central incisor region. The purpose of the present study is to assess Incisive canal characteristics using CBCT sections. Materials and Methods. CBCT scans of 79 systemically healthy patients, with intact maxillary incisors, were evaluated by two calibrated and independent examiners. Assessments included (1) mesiodistal diameter, (2) labiopalatal diameter, (3) length of the Incisive canal, (4) shape of Incisive canal, and (5) width of the bone anterior to the Incisive Foramen. Results. The mean width of the Foramen labiopalatally and mesiodistally was 3.12 ± 0.94 mm and 3.23 ± 0.98 mm, respectively. Mean canal length was 18.63 ± 2.35 mm and males have significantly longer Incisive canal than females. The mean width of bone anterior to the Incisive canal was 6.32 ± 1.43 mm. As age of the subjects increased, Incisive Foramen diameter and Incisive canal length were found to be increased. Cylindrical shaped Incisive canals were seen in most of the individuals followed by funnel shaped and hour-glass shaped canals, and banana-like canal is least prevalent type. Conclusion. The findings from the present study suggest that the diameter and length of Incisive canal vary among different individuals and presence of very thin bone anterior to the canal would suggest that a pretreatment CBCT scan is a valuable tool to evaluate anatomic variations, morphology, and dimensions of Incisive Foramen before immediate implant placement in maxillary central incisor region.
