Prosthetically driven immediate implant placement at lower molar area; an anatomical study

Demircan, Sabit

doi:10.26650/eor.20200059

Cited by 9 publications

(11 citation statements)

References 24 publications

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Section: Discussionmentioning

confidence: 99%

“…Previous studies have predicted a higher risk of lingual perforation in U type mandible [ 7 ]. In this study, a tendency to be classified as U type in more posterior regions was found, which is similar to the results obtained in former studies [ 7 ]. Based on the data of the distance between the lingual outer plate surface and the implant surface at the apex in the simulation in this study, the immediate implantation in the mandibular second molar region presents a higher risk of lingual perforation than the first molar region.…”

Section: Discussionmentioning

confidence: 99%

“…Anatomical structures, such as multi-rooted extraction socket, the inter-radicular septum, the inferior alveolar nerve (IAN), and the lingual concavity of submandibular fossa, vary in each patient and pose a challenge in immediate implant placement [ 6 , 7 ]. The potential surgical complications, for example, inadequate primary stability, IAN injury, and lingual plate perforation may result in the failure of implantation [ 8 , 9 ].…”

Section: Introductionmentioning

confidence: 99%

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Three-dimensional alveolar bone assessment of mandibular molars for immediate implant placement: a virtual implant placement study

2021

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Background To elucidate the anatomical features of the mandibular molar region to allow safe immediate implant placement. Methods Cone-beam computed tomography images of 150 patients (600 teeth) were reviewed retrospectively. The virtual implants were placed in the mandibular first and second molar region. The anatomic structures of the mandible and inter-radicular septum were both categorized into three types. The relationship between implant and inferior alveolar nerve (IAN), and the horizontal distance from the implant surface to the bone wall were analyzed. Variables were compared using a student’s t-test, or Mann–Whitney U test. Results Type U (39.0%) and type S (56.0%) were the most common in the first molar, while type U (67.7%) and type M (54.7%) had the highest prevalence rate in the second molar. The mean distance from the level where the virtual implant was completely surrounded by bone to IAN was 7.06 mm. The mean horizontal widths from the implant to the mesial and distal socket wall were 1.59 mm and 1.89 mm. The widths of the inter-radicular septum and the distances from implant to the buccal and lingual plate on different sections were significantly associated with tooth position (P < .05). Conclusions In the first molar region, the implant is suggested to be placed in the center of the inter-radicular septum, while in the second molar region, the mesial root socket could be considered. Immediate implant placement in the mandibular second molar sockets shows a high risk of IAN injury, lingual perforation, and inadequate primary stability.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Three-dimensional alveolar bone assessment of mandibular molars for immediate implant placement: a virtual implant placement study

2021

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“…It must be mentioned, however, that the majority of studies on immediate implant placement are related to the maxillary aesthetic region. Immediate implant placement in the posterior region is studied much less, probably because those patients are less demanding and due to the different anatomical features of the extraction socket compared to that of the single-rooted teeth in the anterior maxilla [10,11]. Nevertheless, two systematic reviews mention that high survival rates have also been reported for immediate implant placement in molar regions [12,13].…”

Section: Introductionmentioning

confidence: 99%

Immediate implant placement in molar extraction sites: a 1-year prospective case series pilot study

Meijer

Raghoebar

2020

Int J Implant Dent

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Background: There is a growing tendency to place single tooth implants immediately after extracting a failing tooth in the posterior region. The aim of this prospective case series pilot study was to evaluate immediate implant placement in molar post-extraction sites during a 1-year follow-up period. Materials and methods: Fifteen consecutive patients with a single failing molar in the maxilla or mandible, and presenting enough bone to expect primary implant stability and an implant site free of infection, were included. The implants, with a large thread depth and sharp thread edges, were placed in each patient according to a two-staged surgical procedure. Three months later, a full contour screw-retained zirconia restoration with an angulated screw channel abutment was provided. Clinical and radiographic examinations were performed 1 month and 12 months after placing the restoration. In addition, the patients' satisfaction with the restoration was scored after 12 months. Results: Four out of 15 of the mobile implants had to be removed before the 1-year evaluation. The implant and restoration survival rates were 73.3% at the 1-year evaluation (n = 15). The mean marginal bone loss, from loading to the 12-month follow-up, was 0.17 mm (n = 11). The mean plaque, calculus, peri-implant mucosa, bleeding, and pocket probing depth scores were low, depicting healthy peri-implant conditions. The patients were very satisfied. Conclusion: It was demonstrated, within the limitations of this study, that immediate placement of regular diameter implants in molar post-extraction sites in the maxilla and mandible resulted in a high implant failure rate during a 1year follow-up period.

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“…A more sensible approach might be to place a single wide diameter implant in the inter‐radicular bone and in the center of the multi‐rooted socket, to prevent the unwanted compromises of the aforementioned options . Based on cone beam CT images, the dimensions of molar sockets are suitable for the placement of wide diameter implants, but the maximal implant length will be limited to avoid perforation of the sinus floor and the inferior alveolar nerve …”

Section: Introductionmentioning

confidence: 99%

A retrospective study on ultra‐wide diameter dental implants for immediate molar replacement

Hattingh

Bruyn

Vandeweghe

2019

Clin Implant Dent Rel Res

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Background Although immediate implant placement for single rooted teeth is well documented, the prognosis of ultra‐wide implants in molar sockets lacks data. Purpose To evaluate the outcome of ultra‐wide implants, immediately placed in molar sockets. Materials and Methods Patients treated with immediate ultra‐wide diameter implants that have been in function for at least 40 months, were invited for a clinical evaluation. A radiograph was taken to measure marginal bone loss. Probing depths as well as plaque and bleeding scores were recorded at the implant and contralateral tooth. Crown and soft tissue dimensions were measured, and patients filled out an OHIP‐14 questionnaire. Results Eighty‐five out of 230 patients (37%) were evaluated. Twenty‐eight implants received a bone graft to fill the residual space. Average bone loss was 0.19 mm after a mean follow‐up of 67 months, with no significant changes over time (P = 0.170). There was no significant difference in bone loss between the maxilla and mandible (P = 0.797), male or female (P = 0.128), smoking and nonsmoking (P = 0.219), grafted and nongrafted sites (P = 0.098), or the different bio‐types (P = 0.404). The distal papillae were significantly higher if a contact point was present (P = 0.002). Plaque was more frequent at the contralateral tooth (P < 0.001), but more bleeding on probing was observed around the implants (P = 0.021). Overall, 63.5% of the patients experienced no problems at all. Conclusion Ultra‐wide diameter implants for immediate molar replacement demonstrate little bone loss and stable soft tissue conditions over a 4 to 7‐year period.

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Prosthetically driven immediate implant placement at lower molar area; an anatomical study

Cited by 9 publications

References 24 publications

Three-dimensional alveolar bone assessment of mandibular molars for immediate implant placement: a virtual implant placement study

Three-dimensional alveolar bone assessment of mandibular molars for immediate implant placement: a virtual implant placement study

Immediate implant placement in molar extraction sites: a 1-year prospective case series pilot study

A retrospective study on ultra‐wide diameter dental implants for immediate molar replacement

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