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Morphologic Changes of the Nasopalatine Canal Related to Dental Implantation : A Radiologic Study in Different Degrees of Absorbed Maxillae

Identifieur interne : 006531 ( Main/Exploration ); précédent : 006530; suivant : 006532

Morphologic Changes of the Nasopalatine Canal Related to Dental Implantation : A Radiologic Study in Different Degrees of Absorbed Maxillae

Auteurs : Ofer Mardinger [Israël] ; Noa Namani-Sadan [Israël] ; Gavriel Chaushu [Israël] ; Devorah Schwartz-Arad [Israël]

Source :

Journal of periodontology [ 0022-3492 ] ; 2008.

RBID : Pascal:08-0457986

Descripteurs français

KwdFr :
- Adolescent, Adulte, Adulte d'âge moyen, Céphalométrie, Femelle, Humains, Maxillaire (imagerie diagnostique), Mâchoire édentée (imagerie diagnostique), Mâle, Palais (imagerie diagnostique), Pose d'implant dentaire endo-osseux, Processus alvéolaire (imagerie diagnostique), Résorption osseuse (), Résorption osseuse (imagerie diagnostique), Sinus maxillaire (imagerie diagnostique), Soins préopératoires, Sujet âgé, Sujet âgé de 80 ans ou plus, Tomodensitométrie.
MESH :
- imagerie diagnostique : Maxillaire, Mâchoire édentée, Palais, Processus alvéolaire, Résorption osseuse, Sinus maxillaire.
Pascal (Inist)
- Adolescent, Adulte, Adulte d'âge moyen, Atrophie, Céphalométrie, Dent, Femelle, Humains, Implantation, Maxillaire, Anatomie, Implant, Dentisterie, Mâle, Pose d'implant dentaire endo-osseux, Résorption osseuse, Soins préopératoires, Sujet âgé, Sujet âgé de 80 ans ou plus, Tomodensitométrie.
Wicri :
- topic : Anatomie.

English descriptors

KwdEn :
- Adolescent, Adult, Aged, Aged, 80 and over, Alveolar Process (diagnostic imaging), Anatomy, Atrophy, Bone Resorption (classification), Bone Resorption (diagnostic imaging), Cephalometry, Dental Implantation, Endosseous, Dentistry, Female, Humans, Implant, Implantation, Jaw, Edentulous (diagnostic imaging), Male, Maxilla (diagnostic imaging), Maxillary, Maxillary Sinus (diagnostic imaging), Middle Aged, Palate (diagnostic imaging), Preoperative Care, Tomography, X-Ray Computed, Tooth.
MESH :
- classification : Bone Resorption.
- diagnostic imaging : Alveolar Process, Bone Resorption, Jaw, Edentulous, Maxilla, Maxillary Sinus, Palate.
- Adolescent, Adult, Aged, Aged, 80 and over, Cephalometry, Dental Implantation, Endosseous, Female, Humans, Male, Middle Aged, Preoperative Care, Tomography, X-Ray Computed.

Abstract

Background: Implant rehabilitation of the edentulous anterior maxilla remains a complex restorative challenge. Intricate preexisting anatomy dictates meticulous and accurate osteotomy planning. With progressive bone loss, the alveolar crest may approach anatomic structures. The nasopalatine nerve and vessels may ultimately emerge from the ridge crest. The radiologic changes of the nasopalatine canal were evaluated in different resorption phases of the premaxilla alveolus with regard to dental implantation. Methods: The study consisted of 207 subjects who had maxillary computed tomography scans before dental implantation. The Lekholm and Zarb classification was used to divide images according to the residual bony ridge: Class A (control group) and classes B to E (study group). Anatomic mapping of the nasopalatine canal structure was carried out in both groups. Results: The canal diameter was wider along the degree of ridge resorption from classes A to E in all dimensions, mainly in the palatal opening (P<0.01), middle area (P<0.001), and nasal area. The mean diameter of the enlargement was 1.8 mm, which reached 5.5 ± 1.08 mm (P<0.01) in type E bone. In the severely resorbed ridges (classes C through E), when the palatal opening was situated on the ridge, it occupied a mean of 35.6% (13% to 58%) of the area devoted to implant placement. Tooth loss was the main reason for ridge resorption (P<0.01). Conclusions: Canal diameter enlargement was greater anteriorly to the ridge and posteriorly to the palatal bone, mainly because of tooth extraction. The atrophy of disuse may influence surrounding structures, similar to the maxillary sinus tendency to expand into surrounding bone mainly after tooth loss.

Affiliations:

Israël

Le document en format XML

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<term>Aged, 80 and over</term>
<term>Alveolar Process (diagnostic imaging)</term>
<term>Anatomy</term>
<term>Atrophy</term>
<term>Bone Resorption (classification)</term>
<term>Bone Resorption (diagnostic imaging)</term>
<term>Cephalometry</term>
<term>Dental Implantation, Endosseous</term>
<term>Dentistry</term>
<term>Female</term>
<term>Humans</term>
<term>Implant</term>
<term>Implantation</term>
<term>Jaw, Edentulous (diagnostic imaging)</term>
<term>Male</term>
<term>Maxilla (diagnostic imaging)</term>
<term>Maxillary</term>
<term>Maxillary Sinus (diagnostic imaging)</term>
<term>Middle Aged</term>
<term>Palate (diagnostic imaging)</term>
<term>Preoperative Care</term>
<term>Tomography, X-Ray Computed</term>
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<term>Céphalométrie</term>
<term>Femelle</term>
<term>Humains</term>
<term>Maxillaire (imagerie diagnostique)</term>
<term>Mâchoire édentée (imagerie diagnostique)</term>
<term>Mâle</term>
<term>Palais (imagerie diagnostique)</term>
<term>Pose d'implant dentaire endo-osseux</term>
<term>Processus alvéolaire (imagerie diagnostique)</term>
<term>Résorption osseuse ()</term>
<term>Résorption osseuse (imagerie diagnostique)</term>
<term>Sinus maxillaire (imagerie diagnostique)</term>
<term>Soins préopératoires</term>
<term>Sujet âgé</term>
<term>Sujet âgé de 80 ans ou plus</term>
<term>Tomodensitométrie</term>
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<term>Bone Resorption</term>
<term>Jaw, Edentulous</term>
<term>Maxilla</term>
<term>Maxillary Sinus</term>
<term>Palate</term>
</keywords>
<keywords scheme="MESH" qualifier="imagerie diagnostique" xml:lang="fr"><term>Maxillaire</term>
<term>Mâchoire édentée</term>
<term>Palais</term>
<term>Processus alvéolaire</term>
<term>Résorption osseuse</term>
<term>Sinus maxillaire</term>
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<keywords scheme="MESH" xml:lang="en"><term>Adolescent</term>
<term>Adult</term>
<term>Aged</term>
<term>Aged, 80 and over</term>
<term>Cephalometry</term>
<term>Dental Implantation, Endosseous</term>
<term>Female</term>
<term>Humans</term>
<term>Male</term>
<term>Middle Aged</term>
<term>Preoperative Care</term>
<term>Tomography, X-Ray Computed</term>
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<term>Adulte</term>
<term>Adulte d'âge moyen</term>
<term>Atrophie</term>
<term>Céphalométrie</term>
<term>Dent</term>
<term>Femelle</term>
<term>Humains</term>
<term>Implantation</term>
<term>Maxillaire</term>
<term>Anatomie</term>
<term>Implant</term>
<term>Dentisterie</term>
<term>Mâle</term>
<term>Pose d'implant dentaire endo-osseux</term>
<term>Résorption osseuse</term>
<term>Soins préopératoires</term>
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<front><div type="abstract" xml:lang="en">Background: Implant rehabilitation of the edentulous anterior maxilla remains a complex restorative challenge. Intricate preexisting anatomy dictates meticulous and accurate osteotomy planning. With progressive bone loss, the alveolar crest may approach anatomic structures. The nasopalatine nerve and vessels may ultimately emerge from the ridge crest. The radiologic changes of the nasopalatine canal were evaluated in different resorption phases of the premaxilla alveolus with regard to dental implantation. Methods: The study consisted of 207 subjects who had maxillary computed tomography scans before dental implantation. The Lekholm and Zarb classification was used to divide images according to the residual bony ridge: Class A (control group) and classes B to E (study group). Anatomic mapping of the nasopalatine canal structure was carried out in both groups. Results: The canal diameter was wider along the degree of ridge resorption from classes A to E in all dimensions, mainly in the palatal opening (P<0.01), middle area (P<0.001), and nasal area. The mean diameter of the enlargement was 1.8 mm, which reached 5.5 ± 1.08 mm (P<0.01) in type E bone. In the severely resorbed ridges (classes C through E), when the palatal opening was situated on the ridge, it occupied a mean of 35.6% (13% to 58%) of the area devoted to implant placement. Tooth loss was the main reason for ridge resorption (P<0.01). Conclusions: Canal diameter enlargement was greater anteriorly to the ridge and posteriorly to the palatal bone, mainly because of tooth extraction. The atrophy of disuse may influence surrounding structures, similar to the maxillary sinus tendency to expand into surrounding bone mainly after tooth loss.</div>
</front>
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<affiliations><list><country><li>Israël</li>
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<name sortKey="Chaushu, Gavriel" sort="Chaushu, Gavriel" uniqKey="Chaushu G" first="Gavriel" last="Chaushu">Gavriel Chaushu</name>
<name sortKey="Mardinger, Ofer" sort="Mardinger, Ofer" uniqKey="Mardinger O" first="Ofer" last="Mardinger">Ofer Mardinger</name>
<name sortKey="Namani Sadan, Noa" sort="Namani Sadan, Noa" uniqKey="Namani Sadan N" first="Noa" last="Namani-Sadan">Noa Namani-Sadan</name>
<name sortKey="Schwartz Arad, Devorah" sort="Schwartz Arad, Devorah" uniqKey="Schwartz Arad D" first="Devorah" last="Schwartz-Arad">Devorah Schwartz-Arad</name>
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Morphologic Changes of the Nasopalatine Canal Related to Dental Implantation : A Radiologic Study in Different Degrees of Absorbed Maxillae

Morphologic Changes of the Nasopalatine Canal Related to Dental Implantation : A Radiologic Study in Different Degrees of Absorbed Maxillae

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Descripteurs français

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Abstract

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