Influence of Underpreparation on Primary Stability of Implants Inserted in Poor Quality Bone Sites: An In Vitro Study

Degidi, Marco; Daprile, Giuseppe; Piattelli, Adriano

doi:10.1016/j.joms.2015.01.029

Cited by 77 publications

(77 citation statements)

References 12 publications

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“…22 In addition, underpreparation can reduce alveolar bone cutting volume and increase mechanical retention by squeezing the surrounding bone during implant implantation. 23 In this study, all the implant initial stability in the test group was at least 35 N cm by self-invasive implants combined with underpreparation. Studies had shown that at least 3-5 mm of effective implant depth should surround the implant to maintain good initial implant stability.…”

Section: Discussionmentioning

confidence: 77%

“…Studies have shown that self‐invasive implants can achieve better initial stability than noninvasive implants in the same bone condition . In addition, underpreparation can reduce alveolar bone cutting volume and increase mechanical retention by squeezing the surrounding bone during implant implantation . In this study, all the implant initial stability in the test group was at least 35 N cm by self‐invasive implants combined with underpreparation.…”

Section: Discussionmentioning

confidence: 99%

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Immediate implant placement combined with maxillary sinus floor elevation utilizing the transalveolar approach and nonsubmerged healing for failing teeth in the maxillary molar area: A randomized controlled trial clinical study with one‐year follow‐up

Liu

Wang

et al. 2019

Clin Implant Dent Rel Res

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Background In previous studies, immediate implant placement in molar sites has been widely applied. Purpose To study the clinical effect and feasibility of immediate implant placement combined with maxillary sinus floor elevation utilizing the transalveolar approach and nonsubmerged healing for failing teeth in the maxillary molar area. Material and Methods Patients who required implantation surgry to replace a failing tooth in the maxilla molar region were selected. Patients were randomized into two groups: immediate implant placement combined with maxillary sinus floor elevation utilizing the transalveolar approach and nonsubmerged healing (test group) or delayed implant placement combined with maxillary sinus floor elevation utilizing the transalveolar approach and nonsubmerged healing (control group). The outcome criteria were the success rates of implants, Cone Beam Computer Tomography (CBCT) data and results of the subjective satisfaction survey performed with a visual analog scale (VAS). Results All implants had good initial stability after implantation. The survival rate of implants was 100% at 1‐year follow‐up. At the time of permanent restoration, the differences in average horizontal shrinkage of alveolar bone (W1) on the buccal side between the test group (0.65 ± 0.12 mm) and the control group (1.23 ± 0.32 mm) were statistically significant (P < .0001); however, no statistically significant difference (P = .515) was observed on the palatal side (0.3 ± 0.10 mm vs 0.28 ± 0.08 mm). The difference in vertical resorption of alveolar bone (H1) on the buccal side between the test group (0.60 ± 0.18 mm) and the control group (1.53 ± 0.19 mm) was statistically significant (P < .0001), but no statistically significant difference (P = .190) in the reduction of palatal alveolar bone (0.24 ± 0.12 mm vs 0.29 ± 0.13 mm) was observed. After 1‐year loading, no statistically significant difference (P > .05) in vertical or horizontal changes (W2, H2) were identified in the test group or control group. Patient satisfaction in both groups was similar (8.36 ± 1.01 vs 8.14 ± 1.35), and the difference between groups was not statistically significant (P = .638). Conclusion Immediate implant placement combined with maxillary sinus floor elevation utilizing the transalveolar approach and nonsubmerged healing is feasible for the maxillary molar area, and the clinical effect is satisfactory.

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Section: Discussionmentioning

confidence: 77%

Section: Discussionmentioning

confidence: 99%

Immediate implant placement combined with maxillary sinus floor elevation utilizing the transalveolar approach and nonsubmerged healing for failing teeth in the maxillary molar area: A randomized controlled trial clinical study with one‐year follow‐up

Liu

Wang

et al. 2019

Clin Implant Dent Rel Res

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“…A significant parameter that may have contributed to the observed primary stability was implant geometry that integrated a tapered body, sharp drilling apical blades, and double‐lead, sharp, widely spaced (1.2 mm), and gradually expanding deep threads with a steeper angle (35°) than most root‐form implants (60°). This design allowed narrower initial osteotomy, gradual bone expansion, and lateral bone condensation as the implant advanced in a clockwise motion . The self‐cutting characteristics of the implant were further enhanced by two reverse cutting flutes that engaged bone when the implant was turned (½ turn) counterclockwise and enabled gradual widening of the osteotomy.…”

Section: Discussionmentioning

confidence: 99%

Insertion Torque of Variable‐Thread Tapered Implants in the Posterior Maxilla: A Clinical Study

Abi-Aad

Daher

Baba

et al. 2018

Journal of Prosthodontics

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“…Regarding the surgical technique, it has been demonstrated that a 10% under preparation of an implant bed (in length or in diameter) increased the IS of implants inserted in soft bone and dense bone qualities (Degidi et al 2015). In addition, an implant bed preparation with a modified stepped osteotomy (Boustany et al 2015) and the use of osteotomes (Shayesteh et al 2013) have been shown to improve the IS, which is measured by Resonance Frequency Analysis (RFA).…”

mentioning

confidence: 99%

Influence of the implant diameter and bone quality on the primary stability of porous tantalum trabecular metal dental implants: an in vitro biomechanical study

Romanos

Delgado-Ruíz

Sacks

et al. 2016

Clinical Oral Implants Res

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Influence of Underpreparation on Primary Stability of Implants Inserted in Poor Quality Bone Sites: An In Vitro Study

Cited by 77 publications

References 12 publications

Immediate implant placement combined with maxillary sinus floor elevation utilizing the transalveolar approach and nonsubmerged healing for failing teeth in the maxillary molar area: A randomized controlled trial clinical study with one‐year follow‐up

Immediate implant placement combined with maxillary sinus floor elevation utilizing the transalveolar approach and nonsubmerged healing for failing teeth in the maxillary molar area: A randomized controlled trial clinical study with one‐year follow‐up

Insertion Torque of Variable‐Thread Tapered Implants in the Posterior Maxilla: A Clinical Study

Influence of the implant diameter and bone quality on the primary stability of porous tantalum trabecular metal dental implants: an in vitro biomechanical study

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