Accuracy of a Newly Developed Cone-Beam Computerized Tomography-Aided Surgical Guidance System for Dental Implant Placement: An Ex Vivo Study

2012 ◽  
Vol 38 (6) ◽  
pp. 706-712 ◽  
Author(s):  
Sema Murat ◽  
Kıvanç Kamburoğlu ◽  
Tuncer Özen
Keyword(s):  
Dental Implant ◽  
Computerized Tomography ◽  
Ex Vivo ◽  
Simulation Software ◽  
Guidance System ◽  
Cone Beam ◽  
Angular Deviation ◽  
Surgical Guidance ◽  
Implant Placement ◽  
Cone Beam Computerized Tomography

The aim of the present study was to measure the accuracy of the cone-beam computerized tomography (CBCT)- aided StentCad Beyond surgical guidance system and to compare bone-supported and tooth/bone-supported guidance by using this system in dental implant placement ex vivo. Five cadaver mandibles were scanned using an Iluma CBCT scanner. After scanning, DICOM slices were transferred to the StentCad Beyond implant simulation software, which was used for preoperative implant planning. Using the StentCad Beyond guidance system, 9 implant drills were inserted using a bone-supported guidance system and 11 using a tooth/bone-supported guidance system. Mandibles were scanned again and these data were transferred to the StentCad Beyond software. Pre- and postoperative information was superimposed using the Rhinoceros version 4 software program, and deviations between planned and actual drill positions were calculated for each implant. In addition, differences between bone-supported and tooth/bone-supported guidance systems were analyzed by t-test, with a significance level of P < .05. Data analysis found a mean coronal deviation of 1.2 ± 0.3 mm and 0.6 ± 0.6 mm, mean apical deviation of 1.3 ± 0.6 mm and 0.7 ± 0.6 mm, mean apical and coronal depth deviation of 1.4 ± 0.3 mm and 1.3 ± 0.3 mm, and mean angular deviation of 4.2° ± 2.0° and 3.0° ± 1.5° for tooth/bone supported and bone-supported guides, respectively. No statistical differences were found in depth or angular deviations between groups (P > .05); however, statistically significant differences between groups were found in mean horizontal coronal deviation (P = .016) and mean horizontal apical deviation (P = .047). The StentCad Beyond system was found to be a reliable guide for placing implants ex vivo.

Nerve Damage Assessment Following Implant Placement in Human Cadaver Jaws: An Ex Vivo Comparative Study

2014 ◽  
Vol 40 (1) ◽  
pp. 76-82 ◽  
Author(s):  
Sema Murat ◽  
Kıvanç Kamburoğlu ◽  
Cenk Kılıç ◽  
Tuncer Ozen ◽  
Ayhan Gurbuz
Keyword(s):  
Damage Assessment ◽  
Ex Vivo ◽  
Imaging Modality ◽  
Nerve Damage ◽  
Cone Beam ◽  
Chi Square ◽  
Implant Placement ◽  
Chi Square Test ◽  
Cone Beam Computerized Tomography ◽  
The Difference

The present study compared the use of cone beam computerized tomography (CBCT) images and intra-oral radiographs in the placement of final implant drills in terms of nerve damage to cadaver mandibles. Twelve cadaver hemimandibles obtained from 6 cadavers were used. Right hemimandibles were imaged using peri-apical radiography and left hemimandibles using CBCT, and the images obtained were used in treatment planning for the placement of implant drills (22 for each modality, for a total of 44 final drills). Specimens were dissected, and the distances between the apex of the final implant drill and the inferior alveolar neurovascular bundle and incisive nerve were measured using a digital calliper. Nerves were assessed as damaged or not damaged, and the Chi-square test was used to compare nerve damage between modalities (P < 0.05). Nerve damage occurred with 7 final drills placed based on peri-apical radiography (31.8%) and 1 final drill placed using CBCT images (4.5%). The difference in nerve damage between imaging modalities was statistically significant (P = 0.023), with CBCT outperforming intraoral film in the placement of final implant drills ex vivo. In order to prevent nerve damage, CBCT is recommended as the principal imaging modality for pre-implant assessment.

A 10-Year Cone Beam Computerized Tomography Observation of the Buccal Bony Wall of an Immediately Placed Implant at the Anterior Maxilla: A Case Report

2018 ◽  
Vol 44 (3) ◽  
pp. 213-217 ◽  
Author(s):  
Junho Jung ◽  
Kwantae Noh ◽  
Bilal Al-Nawas ◽  
Yong-Dae Kwon
Keyword(s):  
Soft Tissue ◽  
Computerized Tomography ◽  
Wall Thickness ◽  
Cone Beam ◽  
Anterior Maxilla ◽  
Implant Placement ◽  
Immediate Implant ◽  
Cone Beam Computerized Tomography ◽  
The Stability

Since the introduction of immediate implant placements, the buccal bony wall has been a major consideration for success due to its correlation with soft tissue contour and color. This report presents the stability of the buccal wall thickness of an immediately placed implant at the anterior maxilla over 10 years. Although the width of the buccal wall decreased at the 2-year post-op follow-up, it remained stable afterward according to cone beam computerized tomography (CBCT) scans. Hence, this report suggests that ensuring adequate bony wall thickness with bone augmentation and fixture position may promise the longevity of the buccal bony wall and surrounding soft tissue in an immediate implant placement.

Horizontal Bone Augmentation Using Autogenous Block Grafts and Particulate Xenograft in the Severe Atrophic Maxillary Anterior Ridges: A Cone-Beam Computerized Tomography Case Series

2015 ◽  
Vol 41 (S1) ◽  
pp. 366-371 ◽  
Author(s):  
Alberto Monje ◽  
Florencio Monje ◽  
Federico Hernández-Alfaro ◽  
Raúl Gonzalez-García ◽  
Fernando Suárez-López del Amo ◽  
...  
Keyword(s):  
Computerized Tomography ◽  
Case Series ◽  
Cone Beam ◽  
Collagen Membrane ◽  
Bone Augmentation ◽  
Class Iii ◽  
Anterior Maxilla ◽  
Implant Placement ◽  
Ridge Width ◽  
Cone Beam Computerized Tomography

The aim of the present study was to use cone-beam computerized tomography (CBCT) to assess horizontal bone augmentation using block grafts, harvested from either the iliac crest (IC) or mandibular ramus (MR) combined with particulate xenograft and a collagen membrane for in the severe maxillary anterior ridge defects (cases Class III-IV according to Cadwood and Howell's classification). Fourteen healthy partially edentulous patients requiring extensive horizontal bone reconstruction in the anterior maxilla were selected for the study. Nineteen onlay block grafts (from IC or MR) were placed. The amount of horizontal bone gain was recorded by CBCT at 3 levels (5, 7, and 11 mm from the residual ridge) and at the time of bone grafting as well as the time of implant placement (≈5 months). Both block donor sites provided enough ridge width for proper implant placement. Nonetheless, IC had significantly greater ridge width gain than MR (Student t test) (4.93 mm vs 3.23 mm). This was further confirmed by nonparametric Mann-Whitney test (P = .007). Moreover, mean pristine ridge and grafted ridge values showed a direct association (Spearman coefficient of correlation = .336). A combination of block graft, obtained from the IC or MR, combined with particulate xenograft then covered with an absorbable collagen membrane is a predictable technique for augmenting anterior maxillary horizontal ridge deficiency.

Assessing the Accuracy of Cone-Beam Computerized Tomography in Measuring Thinning Oral and Buccal Bone

2016 ◽  
Vol 42 (3) ◽  
pp. 311-314 ◽  
Author(s):  
Zoltán Raskó ◽  
Lili Nagy ◽  
Márta Radnai ◽  
József Piffkó ◽  
Zoltán Baráth
Keyword(s):  
Dental Implants ◽  
Computerized Tomography ◽  
Bone Volume ◽  
Cone Beam ◽  
Bone Thickness ◽  
Domestic Pig ◽  
Voxel Size ◽  
Horizontal Dimension ◽  
Cone Beam Computerized Tomography

The aim of this study was to assess the accuracy and reliability of cone-beam computerized tomography (CBCT) in measuring thinning bone surrounding dental implants. Three implants were inserted into the mandible of a domestic pig at 6 different bone thicknesses on the vestibular and the lingual sides, and measurements were recorded using CBCT. The results were obtained, analyzed, and compared with areas without implants. Our results indicated that the bone thickness and the neighboring implants decreased the accuracy and reliability of CBCT for measuring bone volume around dental implants. We concluded that CBCT slightly undermeasured the bone thickness around the implant, both buccally and orally, compared with the same thickness without the implant. These results support that using the i-CAT NG with a 0.2 voxel size is not accurate for either qualitative or quantitative bone evaluations, especially when the bone is thinner than 0.72 mm in the horizontal dimension.

scholarly journals The Relationship between Maxillary Sinus Lateral Wall Thickness, Alveolar Bone Loss, and Demographic Variables: A Cross-Sectional Cone-Beam Computerized Tomography Study

2018 ◽  
Vol 28 (2) ◽  
pp. 109-114 ◽  
Author(s):  
Tuba Talo Yildirim ◽  
Güliz Nigar Güncü ◽  
Mehmet Colak ◽  
Tolga Fikret Tözüm
Keyword(s):  
Bone Loss ◽  
Maxillary Sinus ◽  
Computerized Tomography ◽  
Wall Thickness ◽  
Alveolar Bone ◽  
Lateral Wall ◽  
Cone Beam ◽  
Cone Beam Computerized Tomography ◽  
And Gender ◽  
The Relationship

Objectives: Sinus floor elevation and augmentation surgery is widely used as a reliable procedure to increase insufficient bone height in the posterior maxillary area. The purpose of the present clinical study was to determine the associations between periodontal bone loss (PBL), maxillary sinus lateral bone wall thickness, age, and gender using cone-beam computerized tomography (CBCT). Materials and Methods: The current retrospective study consists of 716 maxillary sinus CBCT images of 358 patients. The CBCT scans were assessed to detect the relationship between lateral wall thickness and PBL. ANOVA and Student t test analysis were used to determine the influence of PBL on sinus lateral wall thickness. Results: Sinus lateral wall thickness was significantly associated with PBL (p < 0.05) at 3, 13, and 15 mm height. There was no significant association between lateral wall thickness and gender (p > 0.05). However, there was a significant association between lateral wall thickness at 3 and 13 mm and age (p < 0.05). There were significant associations between PBL and age (p < 0.001), and PBL and gender (p < 0.05). Conclusions: PBL might have an association with maxillary sinus lateral bone wall thickness. Further studies are needed to confirm this possible relationship.

Sign in / Sign up

Export Citation Format

Share Document