Precise Implant Placement with a Computer-Assisted Surgical Guide in Cleft Lip and Palate Patients

2015 ◽  
Vol 52 (3) ◽  
pp. 65-71 ◽  
Author(s):  
Re-Mee Doh ◽  
Chugeum Dam ◽  
Kyu-Young Kyung ◽  
Wonse Park
Keyword(s):  
Cleft Lip ◽  
Cleft Lip And Palate ◽  
Computer Assisted ◽  
Surgical Guide ◽  
Implant Placement

Computer-Assisted Virtual Planning for Surgical Guide Manufacturing and Internal Distractor Adaptation in the Management of Midface Hypoplasia in Cleft Patients

2017 ◽  
Vol 54 (4) ◽  
pp. 457-464 ◽  
Author(s):  
Paolo Scolozzi ◽  
Georges Herzog
Keyword(s):  
Computer Aided Design ◽  
Cleft Lip ◽  
Cleft Lip And Palate ◽  
Patient Specific ◽  
Computer Assisted ◽  
Virtual Planning ◽  
Surgical Guide ◽  
Patient Specific Implants ◽  
Surgical Guides ◽  
Computer Aided

We are reporting the treatment of severe maxillary hypoplasia in two patients with unilateral cleft lip and palate by using a specific approach combining the Le Fort I distraction osteogenesis technique coupled with computer-aided design/computer-aided manufacturing customized surgical guides and internal distractors based on virtual computational planning. This technology allows for the transfer of the virtual planned reconstruction to the operating room by using custom patient-specific implants, surgical splints, surgical cutting guides, and surgical guides to plate or distractor adaptation.

Implant placement for patients with cleft lip and palate: A clinical report and guidelines for treatment

2019 ◽  
Vol 121 (1) ◽  
pp. 9-12 ◽  
Author(s):  
Maria G.R. Pucciarelli ◽  
Adolfo C.O. Lopes ◽  
José F.S. Lopes ◽  
Simone Soares
Keyword(s):  
Cleft Lip ◽  
Cleft Lip And Palate ◽  
Clinical Report ◽  
Implant Placement

scholarly journals Evaluation of Secondary and Late Secondary Alveolar Bone Grafting on 66 Unilateral Cleft Lip and Palate Patients

2017 ◽  
Vol 25 (3) ◽  
pp. 194-199 ◽  
Author(s):  
Ravi Mahajan ◽  
Harish Ghildiyal ◽  
Ankit Khasgiwala ◽  
Gogulnathan Muthukrishnan ◽  
Sukhdeep kahlon
Keyword(s):  
Bone Grafting ◽  
Cleft Lip ◽  
Cleft Lip And Palate ◽  
Alveolar Bone ◽  
Late Presentation ◽  
Implant Placement ◽  
Alveolar Bone Grafting ◽  
The Face ◽  
Secondary Alveolar Bone Grafting ◽  
Bony Consolidation

Objective: The aim of this retrospective study was to evaluate the outcomes of secondary alveolar bone grafting and late secondary alveolar bone grafting in 66 unilateral cleft lip and palate patients. Materials and Methods: The total patients were 66 unilateral cleft lip and palate patients, out of which 19 patients underwent secondary alveolar bone grafting and 47 patients underwent late secondary alveolar bone grafting. Autogenous anterior iliac crest cancellous bone graft was harvested and used for grafting the alveolar clefts. Radiographic assessment based on Enemark’s scoring according to the marginal bone levels was done on the intraoral periapical radiographs taken 6 months after performing the surgery. Results: Twelve (63%) out of the 19 patients on whom secondary alveolar bone grafting was done achieved score 1 (optimal marginal bone levels), whereas only 12 (25%) out of the 47 patients achieved score 1 amongst the late secondary alveolar bone graftings. Overall results showed, probability, P = .034 (statistically significant). Conclusion: This study reaffirmed the fact that alveolar bone grafting when done in preadolescent age group (secondary alveolar bone grafting) gives better results in terms of marginal bony consolidation and maintaining the continuity of the alveolar arch, but the late presentation (late secondary alveolar bone grafting) should not be the refusal criteria for performing the alveolar bone grafting. Although the latter patients may not be rewarded in terms of bony consolidation as much as the preadolescent patients the potential of successful surgery in them still exists in terms of providing a platform for the dental implant placement, improvement in the soft tissue symmetry and aesthetics of the face.

A New Technique in Alveolar Cleft Bone Grafting for Dental Implant Placement in Patients With Cleft Lip and Palate

2017 ◽  
Vol 55 (2) ◽  
pp. 180-188 ◽  
Author(s):  
Vo Van Nhan ◽  
Le Van Son ◽  
Ta Anh Tuan ◽  
Nguyen Tai Son ◽  
Trinh Dinh Hai ◽  
...  
Keyword(s):  
Dental Implant ◽  
Bone Grafting ◽  
Cleft Lip ◽  
Cleft Lip And Palate ◽  
Alveolar Cleft ◽  
Implant Placement ◽  
The Mean ◽  
Width Measurements ◽  
A New Technique

Objective: To evaluate 2 iliac corticocancellous-block grafting techniques for dental implant placement in residual alveolar clefts. Design: Nonrandomized prospective clinical trial between March 2010 and December 2014. Setting: National Hospital of Odonto-Stomatology, Hanoi, Vietnam. Participants: Thirty-two patients (23 female, 9 male; mean age, 21.28 years; range, 16-31 years) with unilateral complete alveolar cleft after reconstructive surgery for cleft lip and palate (CLP). Interventions: Harvested iliac crest bone was cut into 2 corticocancellous blocks. The smaller block was adapted against the sutured nasal mucoperiosteum and overlaid with cancellous bone; the larger one overlapped the labial cleft margin and was fixed with screws. Endosteal dental implants were placed after 4 to 6 months, and final restorations were delivered 6 months later. Main Outcome Measures: Flap statuses were assessed clinically. Bone formation was assessed using the Enemark scale. Cone-beam computed tomography was used for graft height and width measurements. Implant health was assessed by the Misch criteria. Results: The mean postgrafting follow-up period was 36.7 ± 10.4 (range, 18-53) months. Three patients (9.4%) showed flap dehiscence but no infection 7 days after bone grafting. Twenty-nine patients (90.6%) had 75% to 100% bone fill (Enemark score of 1). The mean graft height and width were 11.4 ± 2.4 and 6.1 ± 1.0 mm, respectively. Sufficient bone for implant placement was noted in 29 patients (90.6%); the others required partially fixed prostheses. All implants functioned for at least 18 months. Conclusion: The proposed technique is reliable to reconstruct the alveolar cleft for implant placement in CLP patients.

scholarly journals Case report: Fabrication of a dental implant guide based on tetrahedron positioning technology

2021 ◽  
Vol 21 (1) ◽  
Author(s):  
Jie Lin ◽  
Zhenxiang Lin ◽  
Zhiqiang Zheng
Keyword(s):  
Case Report ◽  
Dental Implant ◽  
Numerical Control ◽  
Implant Design ◽  
Computer Assisted ◽  
Angular Deviation ◽  
Special Equipment ◽  
Surgical Guide ◽  
Implant Placement ◽  
Mandibular Molar

Abstract Background Conventional static computer-assisted implant surgery (s-CAIS) requires special equipment, such as 3D printers or computer numerical control (CNC) lathes. We present a low-cost workflow for manufacturing dental implant guides based on tetrahedron positioning technology (TPT). The aim of this case report was to use a surgical guide technique for dental implant placement using tetrahedron positioning technology. Case presentation A 28-year-old man consulted for the treatment of a missing right first mandibular molar by implant placement. The cone-beam computed tomography (CBCT) data were imported into medical image processing software for analysis, and the implant design was simulated. The implant design on CBCT was transferred to the mandibular model using TPT, and the implant surgical guide was made to guide the dental implant operation. CBCT was performed postoperatively and compared with the preoperative design to check the accuracy. The central deviation of the implant head was 0.31 mm, the central deviation of the implant apex was 0.93 mm, and the implant angular deviation was 2.45°. Conclusion The use of tetrahedral positioning technology based on CBCT data is a new method for making implant guides. It is a promising technique offering a highly predictable outcome and lower risk of iatrogenic damage. However, these results should be interpreted with care since they are based on limited evidence from a case report. Larger population studies with longer follow-up periods and standardized experimental studies are required.

Three-Dimensional Computer-Assisted Single-Splint 2-Jaw Cleft Orthognathic Surgery: Toward Patient-Centered Surgical Rationale

2020 ◽  
Vol 57 (12) ◽  
pp. 1428-1433
Author(s):  
Rafael Denadai ◽  
Yu-Ray Chen ◽  
Lun-Jou Lo
Keyword(s):  
Soft Tissue ◽  
Orthognathic Surgery ◽  
Cleft Lip ◽  
Cleft Lip And Palate ◽  
Three Dimensional ◽  
Computer Assisted ◽  
Patient Centered ◽  
3 Dimensional ◽  
Facial Contour ◽  
Tissue Abnormalities

Skeletally mature patients with cleft lip and palate commonly present with skeletofacial deformities characterized by varying degrees of intrinsic and acquired dentoskeletal and soft tissue abnormalities. These abnormalities are associated with scarring from previous surgeries and the asymmetric midline and facial contour that impose challenges for adequate reconstruction. These patients frequently require 2-jaw orthognathic surgery to improve occlusal function and for correction of facial deformities. In this article, we have detailed a 3-dimensional computer-assisted single-splint 2-jaw orthognathic surgery technique as a surgical approach for cleft skeletofacial reconstruction, allowing for the surgery to be tailored according to the specific needs and requests of the patients. Further, we have addressed the multidimensionality and specificities of cleft treatment, the wide versatility, adaptability, and applicability of this technique, and the patient-centered rationale for the adoption of this method.

Accuracy of Different Surgical Guide Designs for Static Computer-Assisted Implant Surgery: An in vitro Study

2021 ◽  
Author(s):  
Yu Tsung Wu ◽  
Panos Papaspyridakos ◽  
Kiho Kang ◽  
Matthew Finkelman ◽  
Yukio Kudara ◽  
...  
Keyword(s):  
In Vitro Study ◽  
Vitro Study ◽  
Computer Assisted ◽  
Surgical Guide ◽  
Implant Placement ◽  
Surgical Guides ◽  
Significant Difference ◽  
Group 3 ◽  
Group 2

The aims of this study were to evaluate the effect of (i) the different surgical guide designs and (ii) implant placement location on the accuracy of fully guided implant placement in single edentulous sites using an in vitro study model. Forty-five partially edentulous models were scanned and divided into three groups: group 1, tooth-supported full-arch surgical guide; group 2, three different tooth-supported shortened surgical guides (SSGs); and group 3, tooth-supported full-arch surgical guide with a crossbar. All surgical guides were printed and used for fully guided implant placement. A total of 180 implants (60 per group) were placed, and scanbodies were positioned on all models, and postoperative surface scan files (STL) files were obtained. Superimposition of preoperative and postoperative STL files was performed, and the accuracy of implant position was evaluated. The interaction between group and implant location was statistically significant for angle, 3D offset at the base, and at the tip (p<0.001). The post-hoc tests showed a statistically significantly higher deviation for group 2 compared to group 3 for all outcomes for implants #4 (p<0.05) and #7 (p<0.05). There was also a statistically significant difference in all outcomes between groups 1 and 3 for implant #7 (p<0.05). All surgical guide designs presented satisfactory performance with clinically acceptable levels of deviation. However, SSGs presented higher accuracy for guided implant placement in a single-edentulous site, whereas a full-arch surgical guide with a crossbar presented superior outcomes when two or more guided implants were placed simultaneously.

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