scholarly journals Prospective Implant Placement Following Traumatic Loss of Anterior Teeth in a Growing patient and Anticipation of Residual Growth

2020 ◽  
Vol 6 (5) ◽  
Author(s):  
Tetsch J ◽  
Tetsch F
Keyword(s):  
Traumatic Loss ◽  
Implant Placement ◽  
Anterior Teeth ◽  
Residual Growth

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 Alveolar ridge alterations in the maxillary anterior region after tooth extraction through orthodontic forced eruption for implant site development: a clinical CBCT study

2019 ◽  
Vol 42 (3) ◽  
pp. 295-304
Author(s):  
Alexandra K Papadopoulou ◽  
Spyridon N Papageorgiou ◽  
Stavros A Hatzopoulos ◽  
Anastasios Tsirlis ◽  
Athanasios E Athanasiou
Keyword(s):  
Root Length ◽  
Linear Regression Analysis ◽  
Plate Thickness ◽  
Sample Size Calculation ◽  
Wilcoxon Test ◽  
Plate Height ◽  
Site Development ◽  
Implant Placement ◽  
Anterior Teeth ◽  
Forced Eruption

Summary Objective To investigate the effects of orthodontic forced eruption (OFE) with the straight-wire appliance in the dimensions of the alveolar process when used for extracting compromised maxillary anterior teeth and implant site development. Material and Methods Cone-beam computed tomography (CBCT) scans of 7 patients needing extraction of 17 maxillary anterior teeth were obtained before and immediately after OFE. Alveolar plate height and thickness measurements were performed on the buccal and palatal socket walls in CBCT sagittal cross sections. Statistical analysis included sample size calculation, paired t-test, and Wilcoxon test to evaluate alveolar plate dimensional changes and linear regression analysis to assess whether bone changes and the feasibility of implant insertion were associated to tooth type and root length, baseline alveolar plate thickness, and age. Results OFE caused statistically significant reduction of the buccal alveolar plate height (1.95 ± 1.83 mm) and significant increase of the palatal alveolar plate height (1.31 ± 2.41 mm) in the central tooth socket areas. Buccal reduction was associated positively to the baseline root length and negatively to the thickness of the corresponding plate in the apical level. A non-significant increase was noted in both buccal (0.23 ± 0.93 mm) and palatal (0.63 ± 1.59 mm) proximal bone. Inadequate buccal bone support hindered immediate implant placement in six sockets; however, all inserted implants showed adequate and gradually increasing stability from insertion to final restoration. Conclusions OFE resulted in favourable increase in the heights of the palatal and proximal alveolar bone and significant reduction in the buccal plate height, which inhibited implant placement in 35% of the treated sockets.

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.

Evaluation of sagittal root positions and bone perforation in anterior teeth using cone beam computed tomography–an observational study

2020 ◽  
Author(s):  
Raghavendra Shrishail Medikeri ◽  
Dr. KumarAnkit Sinha ◽  
Dr. Shruti Chandak ◽  
Dr. Pratiksha Ghogare
Keyword(s):  
Class I ◽  
Mandibular Arch ◽  
Implant Positioning ◽  
Implant Placement ◽  
Anterior Teeth ◽  
Significant Difference ◽  
Root Position ◽  
Delayed Implant Placement ◽  
Maxillary Arch ◽  
Class Iv

CBCT and virtual implant helps the clinician in assessing the implant positioning with nearby vital structures and in planning the implant surgical procedures. Thus, the current study aims to evaluate the anterior sagittal root position and assess labial bone perforations in CBCT images. This study was carried out using CBCT scans of 140 samples involving 1338 teeth. The DICOM files were imported into Care stream 3D Imaging software for analysis. All measurements were made in the appropriate section slice of 200 micro thickness in a darkened room. A standardized orientation was established by two examiners. The sagittal root positions (SRP) were assessed in maxillary and mandibular anterior teeth.LabialBone perforation (LBP) was assessed usingtapered implants in the virtual implant software. Overall, Class I SRP was highest (81.48 % &amp;amp; 38.49%) in both sextants. SRP class I was most prevalent in canine teeth in both arches (87.96% and 56.45%), followed by incisors in other types in maxillary arch. In mandibular arch, both incisors were in Class IV and I. The overall LBP was 4.26% and more likely in the mandibular arch (5.64%) than in the maxillary arch (2.8%). The mandibular central incisors showed the highest rate of perforation (8.5 &amp;ndash; 11.93 %). The SRP and LBP did not show a statistically significant difference between right and left sides in both arches. The correlation coefficient between SRP and LBP showed a statistically significant results (p&lt;0.01).Class I SRP was the most prevalent in maxillary and mandibular arches. Significantly more number of perforations occurred with mandibular anterior teeth and in Class IV SRP types (approx. 10-30 %) suggesting implant placement requires careful presurgical planning and regenerative approaches or delayed implant placement may be considered.

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.

scholarly journals CBCT for estimation of the cemento-enamel junction and crestal bone of anterior teeth

Open Medicine ◽  
2020 ◽  
Vol 15 (1) ◽  
pp. 774-781
Author(s):  
Agnieszka Srebrzyńska-Witek ◽  
Rafał Koszowski ◽  
Ingrid Różyło-Kalinowska ◽  
Magdalena Piskórz
Keyword(s):  
Cone Beam ◽  
Lingual Side ◽  
Implant Placement ◽  
Anterior Teeth ◽  
Study Population ◽  
Crucial Information ◽  
The Mean ◽  
Mandibular Teeth ◽  
The Relationship ◽  
Bone Margin

AbstractThe aim of the study is to evaluate the usefulness of cone-beam computed tomography (CBCT) in the assessment of the relationship between the cemento-enamel junction (CEJ) and bone crest of the anterior mandibular cortex. The study population comprised 39 males and 61 females, aged 18–71. A GENDEX GXCB-500 machine, i-CAT Vision and CorelDraw 9 software were used. The distances between the CEJ and bone crest at buccal and lingual sides of six anterior mandibular teeth were measured. Descriptive statistical methods, Student’s t-test and ANOVA were used. The mean distance between the bone crest and CEJ was 2.32 mm ± 0.78 mm at the buccal and 2.52 mm ± 0.85 mm at the lingual side. It was found that in males aged over 50 years, the mean distance at the buccal side was 2.84 mm ± 0.79 mm and was significantly higher than in males aged 49 and less – 2.08 mm ± 0.41 mm. The mean distance at the lingual side was 3.28 mm ± 1.08 mm and was significantly lower in the age group of 49 years and less – 2.10 mm ± 0.41 mm. CBCT allows determining the distance between the CEJ and crestal bone margin at buccal and lingual sides. The data provide crucial information for planning orthodontic treatment, implant placement and periodontal therapy.

scholarly journals Accuracy of dynamic navigation compared to static surgical guide for dental implant placement

2020 ◽  
Vol 6 (1) ◽  
Author(s):  
Dong Wu ◽  
Lin Zhou ◽  
Jin Yang ◽  
Bao Zhang ◽  
Yanjun Lin ◽  
...  
Keyword(s):  
Retrospective Study ◽  
Dental Implant ◽  
Influence Factors ◽  
Angular Deviation ◽  
Experience Level ◽  
Surgical Guide ◽  
Implant Placement ◽  
Anterior Teeth ◽  
Dynamic Navigation

Abstract Objectives To compare the accuracy of dynamic navigation (DN) with a static surgical guide (SSG) for dental implant placement and the influence factors such as the experience of the surgeon and the implant sites. Methods and materials A total of 38 implants, which underwent the dynamic navigation, and 57 implants which underwent a static surgical guide were enrolled in the retrospective study. Coronal deviation, apical deviation, and angular deviation were compared between the DN and SSG groups, along with the different experience level of surgeons and implant sites in the DN group. Results There were no statistically significant differences between the DN and SSG groups, and the experience level of the surgeons and implant sites in the DN group. However, the apical deviation of the DN was slightly higher than the SSG group in the anterior teeth (P = 0.028), and the angular deviation of DN was smaller than the SSG group in the molar. Conclusion Dynamic navigation can achieve accurate implant placement as well as the static surgical guide. Additionally, the experience level of the surgeon and implant site do not influence the accuracy of dynamic navigation, while the accuracy of DN seems higher than the SSG in molar.

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