Vascular and neurosensory evaluation in relation to lingual canal anatomy after mandibular midline implant installation in edentulous patients

Abstract Objectives The aim of this study is to investigate vascular and neurosensory complications in edentulous patients following the installation of mandibular midline single implants in relation to lingual canals. Materials and methods After performing a cone beam computed tomography scan for the 50 recruited patients, the relationship between the potential implant site and the lingual canals was assessed, and all vascular and neurosensory complications were recorded. Results Six patients (12%) reported profuse bleeding during implant placement, and 13 (26%) reported transient neurosensory changes, which were resolved after 3 months. According to the virtual implant planning, 44 patients (88%) would have their implants touching the lingual canals, six of them reported vascular changes (14%), and 12 out of 44 patients reported neurosensory changes (27%). For the six patients who would have their implants not touching the lingual canals, one patient reported transient neurosensory changes. Conclusions The mandibular lingual canals are constant anatomic landmarks. Injury to the supra-spinosum lingual canals may occur during midline implant placement, depending on the implant length and the bone height. Clinical relevance Despite that injury to the supra-spinosum lingual canals during implant insertion does not result in permanent vascular or neurosensory complications, caution is required to avoid the perforation of the lingual cortices.

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Relationship of central incisor implant placement to the ridge configuration anterior to the nasopalatine canal in dentate and partially edentulous individuals: a comparative study

PeerJ ◽

10.7717/peerj.1315 ◽

2015 ◽

Vol 3 ◽

pp. e1315 ◽

Cited By ~ 6

Author(s):

Xueting Jia ◽

Wenjie Hu ◽

Huanxin Meng

Keyword(s):

Computed Tomography ◽

Cone Beam Computed Tomography ◽

Cone Beam ◽

Central Incisor ◽

Nasopalatine Canal ◽

Implant Placement ◽

Bone Width ◽

Incisive Foramen ◽

Edentulous Patients ◽

Bone Height

Background.The aims of this study were to investigate the ridge contour anterior to the nasopalatine canal, and the difference between the incidences of the nasopalatine canal perforation in dentate and partially edentulous patients by cone-beam computed tomography.Methods.Cone-beam computed tomography scan images from 72 patients were selected from database and divided into dentate and partially edentulous groups. The configuration of the ridge anterior to the canal including palatal concavity depth, palatal concavity height, palatal concavity angle, bone height coronal to the incisive foramen, and bone width anterior to the canal was measured. A virtual implant placement procedure was used, and the incidences of perforation were evaluated after implant placement in the cingulum position with the long axis along with the designed crown.Results.Comparing with variable values from dentate patients, the palatal concavity depth and angle were greater by 0.9 mm and 4°, and bone height was shorter by 1.1 mm in partially edentulous patients, respectively. Bone width in edentulous patients was narrower than in dentate patients by 1.2 mm at incisive foramen level and 0.9 mm at 8 mm subcrestal level, respectively. After 72 virtual cylindrical implants (4.1 × 12 mm) were placed, a total of 12 sites (16.7%) showed a perforation and three-fourths occurred in partially edentulous patients. After replacing with 72 tapered implants (4.3 × 13 mm), only 6 implants (8.3%) broke into the canal in the partially edentulous patient group.Conclusions.The nasopalatine canal may get close to the implant site and the bone width anterior to the canal decreases after the central incisor extraction. The incidence of nasopalatine canal perforation may occur more commonly during delayed implant placement in central incisor missing patients.

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Virtual quad zygoma implant placement using cone beam computed tomography: sufficiency of malar bone volume, intraosseous implant length, and relationship to the sinus according to the degree of alveolar bone atrophy

International Journal of Oral and Maxillofacial Surgery ◽

10.1016/j.ijom.2017.07.004 ◽

2018 ◽

Vol 47 (2) ◽

pp. 252-261 ◽

Cited By ~ 3

Author(s):

J. Bertos Quílez ◽

R. Guijarro-Martínez ◽

S. Aboul-Hosn Centenero ◽

F. Hernández-Alfaro

Keyword(s):

Computed Tomography ◽

Cone Beam Computed Tomography ◽

Alveolar Bone ◽

Bone Volume ◽

Cone Beam ◽

Malar Bone ◽

Implant Placement ◽

Bone Atrophy ◽

Implant Length

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Patient Eligibility for Standardized Treatment of the Edentulous Mandible: A Retrospective CBCT-Based Assessment of Mandibular Morphology

Journal of Clinical Medicine ◽

10.3390/jcm8050616 ◽

2019 ◽

Vol 8 (5) ◽

pp. 616 ◽

Cited By ~ 1

Author(s):

Walid Aouini ◽

France Lambert ◽

Luc Vrielinck ◽

Bart Vandenberghe

Keyword(s):

Incisive Canal ◽

Arch Width ◽

Imaging Center ◽

Implant Placement ◽

Lower Jaw ◽

Edentulous Mandible ◽

Standardized Treatment ◽

Mandibular Morphology ◽

Edentulous Patients ◽

Bone Height

The aim of the study was to evaluate the proportion of patients recommended for full-arch mandibular restoration that would be eligible for treatment with a recently developed premanufactured full-arch prosthesis (Trefoil™, Nobel Biocare) based on the morphology of their lower jaw. Anonymized cone beam computed tomography (CBCT) data from 100 partially and fully edentulous patients referred for full-arch mandibular restoration were retrospectively collected from an imaging center database. Using custom-built software, CBCTs of mandibles were registered to a reference CBCT of a patient treated previously with a premanufactured full-arch prosthesis to determine if patients had adequate horizontal width and vertical height for implant placement. Bone height and thickness around simulated implants and distances to the incisive canal were evaluated. Mandibular arch width and semi-automated volume calculations were also performed. Using the system-specific 5.0 mm diameter implants with lengths of 13 and 11.5 mm, 85% and 86% of patients, respectively, were eligible for treatment with the standardized prosthesis. Eligibility was higher for men than women (odds ratio = 3.9, p = 0.045) due to increased bone volume. Based on mandibular morphology, our results suggest that the standardized treatment concept could serve a large percentage of patients with edentulous mandibles or failing dentition in the mandible.

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Evaluation of Osseointegration in Implants using Digital Orthopantomogram and Cone Beam Computed Tomography

The Journal of Contemporary Dental Practice ◽

10.5005/jp-journals-10024-1961 ◽

2016 ◽

Vol 17 (11) ◽

pp. 953-957 ◽

Cited By ~ 1

Author(s):

Shameeka Thopte ◽

Aastha Chopra ◽

Amit A Mhapuskar ◽

Swati Marathe ◽

Shams U Nisa ◽

...

Keyword(s):

Computed Tomography ◽

Dental Implants ◽

Cone Beam Computed Tomography ◽

Cone Beam ◽

Accurate Assessment ◽

Bony Tissue ◽

Apical Portion ◽

Implant Placement ◽

Radiographic Measurements ◽

Bone Height

ABSTRACT Introduction Accurate assessment of osseointegration in dental implants requires precise radiographic visualization of pathologic conditions as well as anatomical structures. The present study aimed to evaluate the formation of bony tissue (osseointegration) using digital orthopantomogram (OPG) and cone beam computed tomography (CBCT) immediately after implant insertion (within 7 days) and 3 months postinsertion. Materials and methods Twenty single-implant sites on mandibular posterior regions were selected on patients irrespective of their gender. Both digital OPG and CBCT were done within a week and again after 3 months of implant insertion surgery, using the same exposure parameters. Results Three of the 20 implants were submerged and were excluded as the crestal bone height could not be measured. The participants were recalled for radiographic measurements after 3 months of implant placement. On an average, there was 0.03 mm of osseointegration at the apical portion after 3 months of implant insertion on digital OPG; 0.04 mm of osseointegration at the crestal bone height after 3 months on digital OPG; and 0.01 mm of osseointegration at the apical portion after 3 months on CBCT. No change or ≤0.02 mm of osseointegration at crestal bone height after 3 months on CBCT. Conclusion Both digital OPG and CBCT are significant for the assessment of osseointegration in implants, and hence, endow definite benefit for accurate assessment in terms of the success of the implant placement. Clinical significance However, CBCT is a better mode of evaluating dental implants but one should keep in mind that radiographic examination must be conducted to the benefit of the patient by application of the lowest achievable dose. How to cite this article Chopra A, Mhapuskar AA, Marathe S, Nisa SU, Thopte S, Saddiwal R. Evaluation of Osseointegration in Implants using Digital Orthopantomogram and Cone Beam Computed Tomography. J Contemp Dent Pract 2016;17(11):953-957.

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

Open Medicine ◽

10.1515/med-2020-0211 ◽

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.

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The Implant stability and bone height changes for immediately loaded single implant-retained mandibular overdentures with locator attachments

International Dental Research ◽

10.5577/intdentres.2018.vol8.no3.1 ◽

2018 ◽

Vol 8 (3) ◽

pp. 96-104

Author(s):

Elsayed Abdallah Abdel-Khalek ◽

Nesreen El Mekawy

Keyword(s):

Favorable Effect ◽

Implant Stability ◽

Continuous Increase ◽

Implant Placement ◽

Initial Stability ◽

Bone Level ◽

Edentulous Patients ◽

Mandibular Overdenture ◽

Bone Height ◽

Single Implant

Aim: The aim was to evaluate the efficacy of attachment placement on initial stability and bone height changes for immediately loaded single-implants retaining mandibular overdentures. Methodology: Twenty edentulous patients were recruited for this study; 9 females (45.0%) and, 11 males (55.0%) (age ranged from 59.0 to 70.0 year). Single endoosseos implant was inserted in the mandibular midline region. Immediately after surgery; Locator abutment was secured on the implant and the male housing was connected intraorally using direct pick-up procedure. Marginal bone height measurements and implant stability values were assessed at the time of implant placement (baseline), 2,4,6,8, 12, 24 weeks then every 6-month interval up to 18 months post-implant placement. Results: The implant stability values decreased markedly from the baseline, during 4 weeks and, then increased gradually until reaching the initial values after 12 weeks followed by continuous increase to study’s end (p<0.05). The peri-implant marginal bone level revealed an acceptable range of bone loss with a statistically signiﬁcant differences between different follow-up times and it continued to the end of the study (p<0.05). Conclusion: Retaining an overdenture by immediately loaded single implant could be a successful treatment option for mandibular edentulous arches, especially in people with limited financial resources. The use of Locator attachment seemed to have a favorable effect on implant stability and marginal bone around immediately loaded single implant mandibular overdenture after 18-months of function.

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The relationship between occlusal support and maxillary development: An animal study

European Journal of Dentistry ◽

10.4103/1305-7456.163230 ◽

2015 ◽

Vol 09 (03) ◽

pp. 400-403

Author(s):

Fabricio F. Da Costa ◽

Gabriela S. M. Q. Santos ◽

Arcelino Farias-Neto ◽

Alfonso Sanchez-Ayala ◽

Célia M. Rizzatti-Barbosa

Keyword(s):

Tooth Extraction ◽

Cone Beam ◽

Test Results ◽

Support Materials ◽

Mandibular Molar ◽

Molar Teeth ◽

Left And Right ◽

Post Hoc ◽

The Relationship ◽

Tomography Scan

ABSTRACT Objective: To test the hypothesis that maxillary development may be affected by occlusal support. Materials and Methods: The sample was composed by Wistar rats (5 weeks old) divided into three groups: Control (n = 10), extraction of mandibular molar teeth – left side (n = 10), extraction mandibular molar teeth – left and right sides (n = 10). The rats were sacrificed 8 weeks postextraction. Cone beam computed tomography scan images were taken for posterior measurement of maxillary length and width. Data were analyzed by one-way analysis of variance (Tukey test as post-hoc test). Results: Maxillary length was significantly shorter (P < 0.005) in both groups after tooth extraction. No difference was observed regarding maxillary width and body weight. Conclusion: Reduced occlusal support may impair the development of the maxilla in rats.

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