scholarly journals Risk assessment of labial bone perforation in the anterior mandibular region: a virtual immediate implant placement study

2021 ◽  
Vol 7 (1) ◽  
Author(s):  
Yi-Wen Cathy Tsai ◽  
Ren-Yeong Huang ◽  
Chia-Dan Cheng ◽  
Wan-Chien Cheng ◽  
David L. Cochran ◽  
...  
Keyword(s):  
Estimating Equation ◽  
Class Ii ◽  
Multivariable Logistic Regression Analysis ◽  
Bone Thickness ◽  
Cavity Depth ◽  
Implant Placement ◽  
Anterior Teeth ◽  
Confounding Variables ◽  
Mandibular Region ◽  
Immediate Implant

Abstract Background This study investigated the prevalence of labial bone perforation (LBP) related to the associated anatomic factors in anterior mandibular region using a virtual immediate implant placement procedure. Methods Series qualified CBCT images of 149 participants (894 teeth) were selected to analyze the assigned anatomical parameters, including concavity depth, concavity angle, torque, and deep bone thickness. Four classes of crestal and radicular dentoalveolar bone phenotypes (CRDAPs) of mandibular anterior teeth were categorized according to the thickness of dentoalveolar bone at both crestal and radicular zones. Data were adjusted for categorical (gender and CRDAP) and continuous (age, cavity angle, cavity depth, and deep bone thickness) variables using a multivariable logistic regression analysis with generalized estimating equation method. Results The overall probability of LBP after virtual implant placement was 21.6%. There is statistically significant higher prevalence of LBP at canine (28.5%) and CRDAP class II (29.2%) regions (p < 0.001). After adjusting confounding variables, CRDAP class II and class IV regions are more likely to have LBP when compared with CRDAP class I (control) regions (p < 0.01). The risk of LBP at canine site is 6.31 times more likely than at the central incisor (control) (p < 0.01). Conclusions Using a virtual immediate implant placement technique, the prevalence of LBP is significantly higher at the mandibular canine site and thin radicular dentoalveolar phenotype in the anterior mandibular region.

scholarly journals Analysis of the Sagittal Root Angle and Its Correlation With Hard and Soft Tissue Indices in Anterior Teeth for Immediate Implant Evaluation - A Retrospective Study

2021 ◽  
Author(s):  
Mengru Shi ◽  
Xiaoshuang Wang ◽  
Peisheng Zeng ◽  
Haiwen Liu ◽  
Zhuohong Gong ◽  
...  
Keyword(s):  
Soft Tissue ◽  
Alveolar Bone ◽  
Bone Thickness ◽  
Root Angle ◽  
Implant Placement ◽  
Anterior Teeth ◽  
Immediate Implant ◽  
Palatal Bone ◽  
Additional Reference ◽  
Plaster Models

Abstract Background: To assess the root angle characteristics of maxillary incisors, and to analyze the relationship between the root angle and other implant-related anatomical indices to use the sagittal root angle as an index for immediate implant evaluation and design. Methods: A random sample consisting of 400 cone-beam computed tomography (CBCT) images and 65 maxillary plaster models were selected for the present study. CBCT and stereolithography (STL) scan images were imported as DICOM files into coDiagnostiX software for matching the hard and soft tissue. The angle between the long axis of the anterior tooth and the corresponding alveolar bone and implant-related hard and soft tissue indices were measured in the sagittal section. Descriptive statistics, frequency analysis, multi-level comparisons, and correlation analyses were performed. Results: The average sagittal root angles were 15° at the central incisor and 19° at the lateral incisor. The root angle in males was significantly larger than that in females, and increased with age. The largest angle, 22.35º, was found in the lateral incisors of the oldest (> 50 years old) male group. The root angle was found to correlate with coronal buccal bone thickness, coronal palatal bone thickness, apical buccal bone thickness, palatal bone thickness, and the below apex bone thickness. Conclusions: The sagittal root angle could reflect the distribution of other implant-related anatomical indices, which may provide additional reference for the evaluation of immediate implant placement.

scholarly journals Analysis of the sagittal root angle and its correlation with hard and soft tissue indices in anterior teeth for immediate implant evaluation: a retrospective study

2021 ◽  
Vol 21 (1) ◽  
Author(s):  
Mengru Shi ◽  
Xiaoshuang Wang ◽  
Peisheng Zeng ◽  
Haiwen Liu ◽  
Zhuohong Gong ◽  
...  
Keyword(s):  
Soft Tissue ◽  
Alveolar Bone ◽  
Bone Thickness ◽  
Root Angle ◽  
Implant Placement ◽  
Anterior Teeth ◽  
Immediate Implant ◽  
Palatal Bone ◽  
Additional Reference ◽  
Plaster Models

Abstract Background To assess the root angle characteristics of maxillary incisors, and to analyze the relationship between the root angle and other implant-related anatomical indices to use the sagittal root angle as an index for immediate implant evaluation and design. Methods A random sample consisting of 400 cone-beam computed tomography (CBCT) images and 65 maxillary plaster models were selected for the present study. CBCT and stereolithography (STL) scan images were imported as DICOM files into coDiagnostiX software for matching the hard and soft tissue. The angle between the long axis of the anterior tooth and the corresponding alveolar bone and implant-related hard and soft tissue indices were measured in the sagittal section. Descriptive statistics, frequency analysis, multi-level comparisons, and correlation analyses were performed. Results The average sagittal root angles were 15° at the central incisor and 19° at the lateral incisor. The root angle in males was significantly larger than that in females, and increased with age. The largest angle, 22.35°, was found in the lateral incisors of the oldest (> 50 years old) male group. The root angle was found to correlate with coronal buccal bone thickness, coronal palatal bone thickness, apical buccal bone thickness, palatal bone thickness, and the below apex bone thickness. Conclusions The sagittal root angle could reflect the distribution of other implant-related anatomical indices, which may provide additional reference for the evaluation of immediate implant placement.

scholarly journals Sandwich Bone Augmentation (SBA) in immediate implant placement post dentoalveolar trauma: a case report

2017 ◽  
Vol 2 (3) ◽  
pp. 197
Author(s):  
Anton Anton ◽  
Poerwati S. Rahajoe ◽  
Bambang Dwirahardjo
Keyword(s):  
Bone Defect ◽  
Stable Condition ◽  
Bone Augmentation ◽  
Titanium Mesh ◽  
Bone Thickness ◽  
Implant Placement ◽  
Immediate Implant ◽  
Dentoalveolar Trauma ◽  
One Year ◽  
Ti Mesh

Objective: Reporting the application of SBA procedure with titanium mesh as an alternative solution for immediate implant placement in socket with dentoalveolar trauma-induced buccal bone defect.Methods: An 18-year-old female patient visited our department, with a history dentoalveolar trauma and a loss of  tooth 21. Clinical examination during the implant placement procedure exposed  a socket with buccal bone defect. SBA with autogenous chin bone graft combined with DFDBA allograft and stabilized with titanium mesh (Ti-Mesh) for buccal defect on which flap reposition was done with tension free primary closure.Results: Ti-Mesh was removed after 3 months which no sign of inflamation appeared, implant was in a stable condition and new bone formation was observed. Subsequently, healing abutment was placed. A one-year observation suggested a good clinical retention with no luxation observed, along with decent functional and esthetic results. CBCT evaluation showed buccal bone thickness preserved.Conclusion: Sandwich bone augmentation with stabilized titanium mesh provides a satisfying result in treating horizontal buccal bone defect.

Implant Installation With Bone Augmentation and Transmucosal Healing With Demineralized Human Cortical Bone in the Maxillary Anterior Region: Report of 3 Cases

2012 ◽  
Vol 38 (6) ◽  
pp. 762-766 ◽  
Author(s):  
Jun-Beom Park
Keyword(s):  
Demineralized Bone Matrix ◽  
Bone Matrix ◽  
Animal Experiments ◽  
Bone Augmentation ◽  
Implant Placement ◽  
Anterior Teeth ◽  
Tissue Changes ◽  
Term Basis ◽  
Immediate Implant ◽  
Soft Tissue Changes

It is well known that a decrease in vertical height and in horizontal width is seen after tooth extraction. Immediate implant placement, originally thought to prevent buccal wall resorption, showed little or no evident decrease of the resorption rate or pattern in animal experiments or clinical studies. Thus, the need for bone augmentation with immediate implantation has been suggested. However, until recently, simultaneous bone augmentation with immediate implant placement was thought to be possible only in a submerged environment. In this report, the harmony of soft and hard tissue was achieved in 3 patients by immediate implant placement and bone augmentation with transmucosal healing in esthetically challenging situations. Further evaluation is needed to monitor hard- and soft-tissue changes on a long-term basis. Implant placement and bone augmentation with transmucosal healing using demineralized bone matrix may be an option in the treatment of the loss of anterior teeth.

Labial Cortical Bone Thickness in the Anterior Region: A Systematic Review

2021 ◽  
Vol 15 (1) ◽  
Author(s):  
Marziyeh Shafizadeh ◽  
Azita Tehranchi ◽  
Saeed Reza Motamedian
Keyword(s):  
Cortical Bone ◽  
English Studies ◽  
Bone Thickness ◽  
Anterior Maxilla ◽  
Maxillary Central Incisor ◽  
Cortical Bone Thickness ◽  
Implant Placement ◽  
Anterior Teeth ◽  
Dental Procedures ◽  
Wide Range

Context: The labial cortical bone may influence the outcomes of several treatments including fresh socket implant placement and orthodontic treatments. A thin labial plate may contribute to increased risks of periodontal consequences during dental procedures. Acknowledgment of the average values may guide clinicians to take particular considerations in making treatment decisions. Therefore, this study aimed to systematically review the labial cortical bone thickness (LBT) in the anterior maxillary teeth. Objective: The primary purpose of this study was to review the LBT in the anterior maxillary teeth to present the range of average LBT in the global population. Evidence Acquisition: An electronic search was conducted in PubMed, Embase, ProQuest, Web of Science, and Scopus databases. English studies that measured the LBT in the maxillary anterior teeth using CT or CBCT scans were deemed relevant. Only studies performed on adult patients with a lack of periodontal disease were included. Results: A total of 49 studies were included. Mean LBT ranged 0.13 - 3.08, 0.29 - 4.2, and 0.36 - 4.5 mm in maxillary central incisor, lateral incisor, and canine, respectively. Expectedly, LBT was affected by the vertical level of the measurement point and increased toward the apex. In total, the LBT in the anterior maxilla ranged from 0.13 to 4.5 mm. In comparison with other populations, a relatively thin labial plate was evidenced in the Iranian populations. Conclusions: This study showed a wide range of LBT in the esthetic zone. A thin plate in the esthetic area necessitates caution in orthodontic treatments, particularly when tooth expansion or proclination is required. Additionally, wide ranges of reported values which are mostly under 2 mm, highlight the importance of CBCT acquisition before any fresh socket implant placement.

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