A New Classification of Anterior Mandible Edentulous Ridge Based on Cone Beam Computed Tomography

Safi, Yaser; Amid, Reza; Vasegh, Zahra; Ahsaie, Mitra Ghazizadeh

doi:10.1615/jlongtermeffmedimplants.2020037061

Cited by 6 publications

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“…Dental implant-associated problems may not be apparent immediately, and CBCT imaging is the modality of choice for postoperative evaluations of dental implant malpositioning. 40 In this study, the most common type of malpositioning was buccal plate perforation, and it was more commonly seen in the anterior maxilla than at other sites.…”

Section: Discussionmentioning

confidence: 63%

The occurrence of dental implant malpositioning and related factors: A cross-sectional cone-beam computed tomography survey

et al. 2021

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Purpose Dental implants are widely used for the rehabilitation of edentulous sites. This study investigated the occurrence of dental implant malpositioning as shown on post-implantation cone-beam computed tomography (CBCT) and to identify related factors. Materials and Methods Samples with at least 1 malpositioned dental implant were collected from a central radiology clinic in Tehran, Iran from January 2017 to January 2019. Variables such as demographic characteristics, length and diameter of implants, type of implant, sites of implant insertion, different types of implant malpositioning problems (cortical plate perforation, interference with anatomical structures), angulation of the implant, and the severity of malpositioning were assessed. In addition, the incidence of implant fracture and over-drilling was evaluated. Data were statistically analyzed using the chi-square test, 1-sample t-test, and Spearman correlation coefficients. Results In total, 252 patients referred for implant postoperative CBCT evaluations were assessed. The cases of implant malpositioning included perforation of the buccal cortical plate (19.4%), perforation of the lingual cortical plate (14.3%), implant proximity to an adjacent implant (19.0%), implant proximity to an adjacent tooth (3.2%), interference with anatomical structures (maxillary sinus: 18.3%, mandibular canal: 11.1%, nasal cavity: 6.3%, mental foramen: 5.6%, and incisive canal: 0.4%). Implant fracture and over-drilling were found in 1.6% and 0.8% of cases, respectively. Severity was categorized as mild (9.5%), moderate (35.7%), severe (37.7%), and extreme (17.1%), and 52.4% of implants had inappropriate angulation. Conclusion CBCT imaging is recommended for detecting dental implant malpositioning. The most common and severe type of malpositioning was buccal cortex perforation.

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Section: Discussionmentioning

confidence: 63%

The occurrence of dental implant malpositioning and related factors: A cross-sectional cone-beam computed tomography survey

et al. 2021

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“…A 3D imaging modality such as CBCT is the imaging modality of choice prior to implant placement especially in patients with long-term edentulism. 14,15 Cortical crest thickness has a major role in implant stability. In this study, the crestal cortical bone thickness at the implant sites in various regions was as follows: 1.71 ± 0.60 mm in the posterior mandible, 1.47 ± 0.58 mm in the anterior mandible, 1.28 ± 0.44 mm in the anterior maxilla, and 0.95 ± 0.37 mm in the posterior maxilla.…”

Section: Discussionmentioning

confidence: 99%

Quantitative Evaluation of Bone-Related Factors at the Implant Site by Cone-Beam Computed Tomography

Vasegh

Safi

Amid

et al. 2022

J Long Term Eff Med Implants

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Objectives: Dental implant is a commonly used treatment modality for replacement of the missing teeth. The aim of the present study was to evaluate a number of bone-related factors at the implant site preoperatively by conebeam computed tomography (CBCT). Materials and Methods:A total of 400 implant sites were evaluated on CBCT images. The height, width, angle of residual ridge, thickness of cortical bone crest, and the ridge concavity were evaluated on cross sectional images at four regions: the anterior maxilla, anterior mandible, posterior maxilla, and posterior mandible. Results:The highest thickness of cortical bone was observed in posterior mandible followed by anterior mandible, anterior maxilla, and posterior maxilla. In the mandible, the mean buccal concavity was higher in the anterior than in the posterior region (P = 0.0094). The measurements indicated that in both the maxilla (P = 0.0256) and mandible (P < 0.0001), the residual ridge width was lower in the anterior than in the posterior region; while the height of the residual ridge was higher in the anterior than in the posterior region in the mandible (P < 0.0001). In the maxilla, the remaining ridge angle in the anterior region was greater than that in the posterior region (P < 0.0001). Conclusion:Anatomical variations detected on CBCT results in personalized treatment planning considering best site and the best fixture in terms of size and position prior to implant fixture insertion.

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Comprehensive view of the posterior mandibular ridge morphology

GOUDARZİ

Anbiaee

Shakeri

2024

International Journal of Oral and Maxillofacial Surgery

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A New Classification of Anterior Mandible Edentulous Ridge Based on Cone Beam Computed Tomography

Cited by 6 publications

References 0 publications

The occurrence of dental implant malpositioning and related factors: A cross-sectional cone-beam computed tomography survey

The occurrence of dental implant malpositioning and related factors: A cross-sectional cone-beam computed tomography survey

Quantitative Evaluation of Bone-Related Factors at the Implant Site by Cone-Beam Computed Tomography

Comprehensive view of the posterior mandibular ridge morphology

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