Apesar das explicações dos mecanismos e dos porquês os folículos pericoronários dos caninos superiores não irrompidos podem reabsorver as raízes dos dentes vizinhos, questiona-se a inexistência de previsibilidade do tempo em que isso ocorre e a ausência de protocolos de condutas clínicas preventivas, como insights para novas pesquisas. Correlaciona-se, também, esses mecanismos com os aspectos imaginológicos de cortes tomográficos e reconstruções 3D de um caso clínico característico.

Palavras-chave:
Reabsorção dentária; Folículo pericoronário; Dentes não irrompidos; Caninos impactados

Autoria

Alberto Consolaro

Universidade de São Paulo, Faculdade de Odontologia de Ribeirão Preto, Programa de Pós-Graduação de Odontopediatria (Ribeirão Preto/SP, Brazil). Universidade de São PauloBrazilRibeirão Preto, SP, Brazil Universidade de São Paulo, Faculdade de Odontologia de Ribeirão Preto, Programa de Pós-Graduação de Odontopediatria (Ribeirão Preto/SP, Brazil).

Universidade de São Paulo, Faculdade de Odontologia de Bauru (Bauru/SP, Brazil).Universidade de São PauloBrazilBauru, SP, Brazil Universidade de São Paulo, Faculdade de Odontologia de Bauru (Bauru/SP, Brazil).

https://orcid.org/0000-0002-5902-5646

Omar Hadaya

Private practice (Maringá/PR, Brazil). Private practice (Maringá/PR, Brazil). BrazilMaringá, PR, Brazil Private practice (Maringá/PR, Brazil).

https://orcid.org/0000-0002-5973-2543

Taisa Maeshiro Estorce

Universidade de Guarulhos, Curso de Especialização em Ortodontia (Guarulhos/SP, Brazil).Universidade de GuarulhosBrazilGuarulhos, SP, Brazil Universidade de Guarulhos, Curso de Especialização em Ortodontia (Guarulhos/SP, Brazil).

https://orcid.org/0000-0002-7500-292X

Contact address:
Alberto Consolaro E-mail: consolaro@uol.com.br

Conception or design of the study: AC. Data acquisition, analysis or interpretation: AC, OH, TME. Writing the article: AC, OH, TME. Critical revision of the article: AC, OH, TME. Final approval of the article: AC, OH, TME. Overall responsibility: OH, TME.

SCIMAGO INSTITUTIONS RANKINGS

Private practice (Maringá/PR, Brazil). Private practice (Maringá/PR, Brazil). BrazilMaringá, PR, Brazil Private practice (Maringá/PR, Brazil).

Figuras

Figuras (5)

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Figure 1
Radiographic reconstruction showing region of unerupted canine between maxillary lateral incisor and first premolar, in special position of canine crown, close to canine roots. Radiolucent (hypodense) area around canine crown extending from periodontal space of neighboring roots (arrows). Space measures same as canine mesiodistal width, but is not large enough for dental follicle.

Thumbnail

Figure 2
Buccal view of 3D reconstruction of maxillary canine region in same patient as in Figure 1. Hypodense pericoronal space extends from periodontal space of neighboring roots, and root surfaces of both teeth are irregular (arrows). Space measures same as canine mesiodistal width, but is not large enough for dental follicle.

Thumbnail

Figure 3
Palatal view of 3D reconstruction of maxillary canine region in same patient as in Figure 2. Hypodense pericoronal space extends from periodontal space of neighboring roots, and root surfaces of both teeth are irregular (arrows).

Thumbnail

Figure 4
Occlusal view of 3D reconstruction of maxillary canine region in same patient as in Figure 3. Hypodense pericoronal space is clearly restricted in this region (arrow).

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Figure 5
Axial CT scans of cervical third of impacted maxillary canine of same patient as in Figures 1 to 4. Hypodense pericoronal space extends from periodontal spaces of neighboring tooth roots (white arrows) with slightly irregular surfaces, indicative of incipient external root resorption (red arrows). Space measures same as canine mesiodistal width, but is not large enough for dental follicle, and death of cementoblastic cells exposes region to osteoclasts.

Figure 1 Radiographic reconstruction showing region of unerupted canine between maxillary lateral incisor and first premolar, in special position of canine crown, close to canine roots. Radiolucent (hypodense) area around canine crown extending from periodontal space of neighboring roots (arrows). Space measures same as canine mesiodistal width, but is not large enough for dental follicle.

Figure 2 Buccal view of 3D reconstruction of maxillary canine region in same patient as in Figure 1. Hypodense pericoronal space extends from periodontal space of neighboring roots, and root surfaces of both teeth are irregular (arrows). Space measures same as canine mesiodistal width, but is not large enough for dental follicle.

Figure 3 Palatal view of 3D reconstruction of maxillary canine region in same patient as in Figure 2. Hypodense pericoronal space extends from periodontal space of neighboring roots, and root surfaces of both teeth are irregular (arrows).

Figure 4 Occlusal view of 3D reconstruction of maxillary canine region in same patient as in Figure 3. Hypodense pericoronal space is clearly restricted in this region (arrow).

Figure 5 Axial CT scans of cervical third of impacted maxillary canine of same patient as in Figures 1 to 4. Hypodense pericoronal space extends from periodontal spaces of neighboring tooth roots (white arrows) with slightly irregular surfaces, indicative of incipient external root resorption (red arrows). Space measures same as canine mesiodistal width, but is not large enough for dental follicle, and death of cementoblastic cells exposes region to osteoclasts.

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[1] Contact address:
Alberto Consolaro E-mail: consolaro@uol.com.br