Primary stability and healing outcomes of apically tapered and straight implants placed into fresh extraction sockets. A pre‐clinical in vivo study

Ellis, Rebecca; Chen, Stephen; Davies, Helen M.S.; Fitzgerald, Wayne; Xu, Junhua; Darby, Ivan

doi:10.1111/clr.13618

Cited by 8 publications

(8 citation statements)

References 18 publications

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“…In the present study, it was noted that the buccal bone crest had resorbed corono-apically and was replaced with a regenerated bone wall comprised of DBBMC and new bone. This is consistent with previous pre-clinical studies of ARP and immediate implant placement using the maxillary second incisor model (De Santis et al, 2011;Ellis et al, 2020;Raveendiran et al, 2019) and mandibular hemisected premolar model Fickl et al, 2008). The findings are also consistent with clinical studies of ARP, which confirmed that the procedure is effective at reducing but not preventing resorption of the ridge TA B L E 2 IS-fBIC, IS-C and IS-ROB measurements at the buccal and palatal aspects at both time points in the corono-buccal region (Botilde et al, 2020;Fickl et al, 2017;Jung et al, 2018;Mardas et al, 2010).…”

Section: Ta B L Esupporting

confidence: 92%

“…The study was limited by exclusion of 2 out of the 9 animals due to fibrous encapsulation and non-integration of 3 implants. The reasons for this are not clear, but a similar finding was reported in a previous study of immediate implants in the same second incisor model (Ellis et al, 2020). Care should be, therefore, taken in interpreting the results of the study.…”

Section: Ta B L Esupporting

confidence: 58%

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Early implant placement in ridge preserved extraction sockets: A pre‐clinical in vivo study

Rodríguez-Ortiz

Chen

Davies

et al. 2021

Clinical Oral Implants Res

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After tooth extraction, healing of the socket takes place with gradual regeneration of bone within the socket. Concurrently, there is loss of apico-coronal height and oro-buccal width of the alveolar ridge due to physiological resorption of the external socket walls, predominantly on the buccal side of the socket (M. G. Araujo & Lindhe, 2005;Cardaropoli et al., 2003). Bone resorption leads to a reduction in the volume of the ridge (Cardaropoli et al., 2006;Schropp et al., 2003). When dental implant therapy is proposed for the replacement of extracted teeth, the post-extraction dimensional changes can hinder the ideal position of the implant for the

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Section: Ta B L Esupporting

confidence: 92%

Section: Ta B L Esupporting

confidence: 58%

Early implant placement in ridge preserved extraction sockets: A pre‐clinical in vivo study

Rodríguez-Ortiz

Chen

Davies

et al. 2021

Clinical Oral Implants Res

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“…The success or failure of dental implants, especially during the healing phase, is a multifactorial problem in which implant mobility/stability, according to the 1986 Albrektsson criteria is one of several key criteria [ 1 ]. One important prerequisite for achieving implant osseointegration is primary stability after implant placement [ 2 ]. Adequate initial stability is required to allow the implant to withstand micromovements before osseointegration is achieved.…”

Section: Introductionmentioning

confidence: 99%

Relationship between Implant Geometry and Primary Stability in Different Bony Defects and Variant Bone Densities: An In Vitro Study

et al. 2020

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Aim: This in vitro study aimed to evaluate the effects of implant designs on primary stability in different bone densities and bony defects. Methods: Five implant types (tapered-tissue-level, tissue-level, zirconia-tissue-level, bone-level, and BLX implants) were used in this assessment. The implants were inserted into four different artificial bone blocks representing varying bone-density groups: D1, D2, D3, and D4. Aside from the control group, three different types of defects were prepared. Using resonance frequency analysis and torque-in and -out values, the primary stability of each implant was evaluated. Results: With an increased defect size, all implant types presented reduced implant stability values measured by the implant stability quotient (ISQ) values. Loss of stability was the most pronounced around circular defects. Zirconia and bone-level implants showed the highest ISQ values, whereas tissue level titanium implants presented the lowest stability parameters. The implant insertion without any thread cut led to a small improvement in primary implant stability in all bone densities. Conclusions: Compared with implants with no peri-implant defects, the three-wall and one-wall defect usually did not provide significant loss of primary stability. A significant loss of stability should be expected when inserting implants into circular defects. Implants with a more aggressive thread distance could increase primary stability.

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“…A multi-centered clinical trial [20] and a prospective cohort study [21] reported ISQ values at implant placement were similar for the two groups. Nevertheless, Ellis et al [22] considered different alveolar socket shapes may affect primary stability, with further design of a split-mouth in dog second maxillary incisors, and the result corroborated tapered implants gained significantly higher ISQ value. That might explain the possible reason why it would still be unfeasible to arrive at the desired position even if the same surgeon performed the experiments.…”

Section: Introductionmentioning

confidence: 98%

Accuracy and primary stability of tapered or straight implants placed into fresh extraction socket using dynamic navigation: a randomized controlled clinical trial

Wei¹,

Shi²,

Qiao³

et al. 2021

Clin Oral Invest

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Objectives To compare the accuracy and primary stability of tapered and straight implants undergoing immediate implant placement with dynamic navigation. Materials and methods Patients with compromised anterior teeth in maxilla were recruited and allocated randomly into (1) tapered implant group (TI group) and (2) straight implant group (SI group). Implants were inserted into fresh sockets with dynamic navigation. Three-dimensional platform deviation, apex deviation, angular deviation, insertion torque value (ITV) and implant stability quotient (ISQ) were recorded. Results Twenty patients with 20 implants were included. The overall platform, apex, and angular deviation were 0.87 ± 0.35 mm, 0.81 ± 0.34 mm, and 2.40 ± 1.31°, respectively. The accuracy was 0.86 ± 0.26 mm, 0.76 ± 0.33 mm, and 2.49 ± 1.54° for TI, and 0.89 ± 0.44 mm, 0.88 ± 0.36 mm, and 2.31 ± 1.01° for SI, with no significant difference (p = 0.85, 0.45, 0.76). Sagittal root position classification (SRP) class I may obtain greater error in numerical values in straight implants (0.97 ± 0.47 mm vs. 0.6 ± 0.16 mm, 0.92 ± 0.36 mm vs. 0.73 ± 0.36 mm, 2.48 ± 1.19° vs. 1.71 ± 0.14°). The overall ISQ was 60.74. ISQ was 60.48 for TI and 60.96 for SI, with no significant difference. Acceptable ITV (> 15 Ncm) was achieved in most of the included patients (SI 7/10, TI 9/10). Conclusions High accuracy and primary stability of immediate implant placement could be achieved both in tapered and straight implants with dynamic navigation systems. Clinical relevance Tapered and straight implants did not reach a consensus on which was better in immediate implant regarding to accuracy and primary stability. Our study demonstrated implant macrodesign did not affect accuracy and primary stability in immediate implant using dynamic navigation.

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Primary stability and healing outcomes of apically tapered and straight implants placed into fresh extraction sockets. A pre‐clinical in vivo study

Abstract: Article type : Original Research Primary stability and healing outcomes of apically tapered and straight implants placed into fresh extraction sockets. A pre-clinical in vivo study

Cited by 8 publications

References 18 publications

Early implant placement in ridge preserved extraction sockets: A pre‐clinical in vivo study

Early implant placement in ridge preserved extraction sockets: A pre‐clinical in vivo study

Relationship between Implant Geometry and Primary Stability in Different Bony Defects and Variant Bone Densities: An In Vitro Study

Accuracy and primary stability of tapered or straight implants placed into fresh extraction socket using dynamic navigation: a randomized controlled clinical trial

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