Quantitative analysis of the relationship between maxillary incisors and the incisive canal by cone-beam computed tomography in an adult Japanese population

Matsumura, Tomonari; Ishida, Yuji; Kawabe, Ayako; Ono, Takashi

doi:10.1186/s40510-017-0181-1

Cited by 34 publications

(30 citation statements)

References 33 publications

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“…Kotaro et al [15] in their study found out that the average mesiodistal diameter of the incisive fossa was 3.3 mm and 2.8 mm in males and females respectively. Matsumura et al [16] in their study measured it as 3.1 mm and 3.3 mm in males and females respectively. In the present study, the average diameter of the canal at the level of the nasal floor was 1.54 mm and 1.50 mm in males and females respectively.…”

Section: Discussionmentioning

confidence: 99%

Nasopalatine Canal Revisited: An Insight to Anterior Maxillary Implants

Bajoria¹,

Kochar²,

Sangamesh³

et al. 2018

OJST

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Purpose: The study was performed to evaluate variability in nasopalatine canal using cone beam computed tomography (CBCT) in relation to age and gender. The study also provides an insight while considering anterior maxillary implants. Materials and Methods: The study included 200 subjects aged between 19 and 67 years who were divided into the following 3 groups: 1) 19 -34 years old; 2) 35 -49 years old; 3) >50 years old. The male and female subjects were 104 and 96 respectively. After obtaining a prior consent, CBCT was performed using a standard exposure and patient positioning protocol. The CBCT volume was sliced in three planes (X, Y, and Z) and was sequentially analyzed for the location, morphology and morphometric dimensions of the nasopalatine canal. The correlation of age and gender with all the variables were evaluated. Results: The present study revealed statistically significant differences in the length of the nasopalatine canal based on the age group. The slanted and the cylindrical variety of the nasopalatine canal were commonly observed in the study. However, no statistical differences were noted in the other variables such as number of openings at the nasal fossa, diameter of the incisive fossa, angulation of the canal as viewed in the sagittal sections and antero-posterior dimensions of the canal in the sagittal sections. Conclusion: The present study demonstrates the variability observed in the anatomy and morphology of the nasopalatine canal which is an important landmark for placing dental implants in the anterior maxillary region.

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Section: Discussionmentioning

confidence: 99%

Nasopalatine Canal Revisited: An Insight to Anterior Maxillary Implants

Bajoria¹,

Kochar²,

Sangamesh³

et al. 2018

OJST

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“…The incisive canal contains the nasopalatine vessels and nerves, branches of the maxillary division of the trigeminal nerve, and the maxillary artery. 11 12 13 14 The proximity of the maxillary incisor roots to the incisive canal and approximation or invasion of the incisive canal by the tooth roots after anterior tooth retraction has not been evaluated in detail, probably because the incisive canal is a midsagittal structure positioned between the roots, with a morphology and dimension that are not clearly defined on conventional two-dimensional (2D) images. However, the availability of 3DCT has allowed observation of the incisive canal as an anatomical structure that may be associated with orthodontically induced inflammatory root resorption in the maxillary central incisors during maximum retraction.…”

Section: Discussionmentioning

confidence: 99%

“…However, the availability of 3DCT has allowed observation of the incisive canal as an anatomical structure that may be associated with orthodontically induced inflammatory root resorption in the maxillary central incisors during maximum retraction. 11 12 13 14 Variations in the morphology of the incisive canal have frequently been reported in 3DCT studies; these include lateral deviation, widening or cystic changes, and furcation, among others. 11 Therefore, evaluation of the “safe zone” (i.e., the area of safe tooth movement within the alveolar bone) using pretreatment 3DCT images may be very important to ensure minimal apical root damage.…”

Section: Discussionmentioning

confidence: 99%

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Cone-beam computed tomography-based diagnosis and treatment simulation for a patient with a protrusive profile and a gummy smile

et al. 2018

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For patients with bimaxillary protrusion, significant retraction and intrusion of the anterior teeth are sometimes essential to improve the facial profile. However, severe root resorption of the maxillary incisors occasionally occurs after treatment because of various factors. For instance, it has been reported that approximation or invasion of the incisive canal by the anterior tooth roots during retraction may cause apical root damage. Thus, determination of the position of the maxillary incisors is key for orthodontic diagnosis and treatment planning in such cases. Cone-beam computed tomography (CBCT) may be useful for simulating the post-treatment position of the maxillary incisors and surrounding structures in order to ensure safe teeth movement. Here, we present a case of Class II malocclusion with bimaxillary protrusion, wherein apical root damage due to treatment was minimized by pretreatment evaluation of the anatomical structures and simulation of the maxillary central incisor movement using CBCT. Considerable retraction and intrusion of the maxillary incisors, which resulted in a significant improvement in the facial profile and smile, were achieved without severe root resorption. Our findings suggest that CBCT-based diagnosis and treatment simulation may facilitate safe and dynamic orthodontic tooth movement, particularly in patients requiring maximum anterior tooth retraction.

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“…However, the relationship between orthodontic treatment and gingival recession has been controversially discussed in clinical research. Studies have shown that, in patients who exhibit gingival recession caused by occlusal trauma, the alveolar bone is remodeled and the condition of gingival recession is improved by orthodontic treatment [ 10 ]. It has also been reported that the prevalence of gingival recession is increased by orthodontic treatment in patients with mandibular anterior teeth anteversion and in patients requiring upper dental arch expansion.…”

Section: Introductionmentioning

confidence: 99%

Prevalence of gingival recession after orthodontic treatment of infraversion and open bite

Qing

et al. 2018

J Orofac Orthop

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PurposeAim of the present study was to investigate the prevalence of gingival recession and related factors in teeth with low occlusal function (open bite and infraversion) after orthodontic treatment.MethodsFrom January 2014 to December 2017, 403 patients received orthodontic treatment. Their gingival recession and related factors before and after treatment were retrospectively analyzed.ResultsThe prevalence of gingival recession in patients with infraversion and open bite after orthodontic treatment were 80.6 and 75.0%, respectively; these values were 43.4 and 47.5% before treatment, respectively. Notably, the Miller index of gingival recession increased after orthodontic treatment (P < 0.05). The risk of gingival recession in patients with infraversion or open bite after orthodontic treatment was remarkably higher than the risk in other patients (odds ratio [OR] = 16.712 and 5.073, respectively); the gingival recession rate was related to treatment with tooth extraction (OR = 2.043), as well as gingival biotype (OR = 0.341) and gingival index (GI) before orthodontic treatment (OR = 97.404; P < 0.05).ConclusionsPatients with these two types of low occlusal function are more likely to exhibit gingival recession after orthodontic treatment. Moreover, the prevalence of gingival recession after orthodontic treatment is higher among patients who have undergone tooth extraction during orthodontic treatment, and among those who exhibit thin gingival biotype and high gingival index before orthodontic treatment.

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Quantitative analysis of the relationship between maxillary incisors and the incisive canal by cone-beam computed tomography in an adult Japanese population

Cited by 34 publications

References 33 publications

Nasopalatine Canal Revisited: An Insight to Anterior Maxillary Implants

Nasopalatine Canal Revisited: An Insight to Anterior Maxillary Implants

Cone-beam computed tomography-based diagnosis and treatment simulation for a patient with a protrusive profile and a gummy smile

Prevalence of gingival recession after orthodontic treatment of infraversion and open bite

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