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

Abi-Aad, Habib L; Daher, Fadi I; Baba, Nadim Z.; Cordioli, Giampiero; Majzoub, Zeina

doi:10.1111/jopr.12965

Cited by 7 publications

(4 citation statements)

References 31 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…The IT values reported here ranging from 13 to 22 N cm were much lower than the clinically recommended torque value of 35 N cm [ 24 – 26 ]. The lower torque values can be explained by our use of artificial bone, mimicking type-4 bone, and a cylindrical non-self-tapping design limiting the interface between thread and bone.…”

Section: Discussioncontrasting

confidence: 60%

Effects of implant thread design on primary stability—a comparison between single- and double-threaded implants in an artificial bone model

et al. 2020

View full text Add to dashboard Cite

Background: Primary implant stability is essential for osseointegration. To increase stability without changing the implant size, the thread length must be extended by reducing pitch, using a double-threaded implant, or reducing pitch/lead and lead angle to half that of a single-threaded implant. Materials and methods: We tested the stabilities of these configurations using artificial bone. A 1.2-mm pitch, single-threaded implant (12S) was the control. We tested a 0.6-mm pitch/1.2-mm-lead double-threaded implant (06D) and a 0.6-mm pitch/lead single-threaded implant (06S). We compared stabilities by measuring insertion torque, removal torque, and the implant stability quotient (ISQ). Damage to bone tissue caused by the implants was evaluated using microscopy and morphometric analysis. Results: We show that 06D and 06S significantly improved stability compared with the 12S reference. The stability of 06S was significantly greater compared with that of 06D, except for ISQ. The three implants were associated with bone tissue damage characterized by debris and voids surrounding the implant/bone interface. The 06D caused the most tissue damage, followed by 06S and then 12S. Conclusion: These findings indicate that primary stability was significantly improved by changing the implant size, extending the thread length with reduced pitch/lead, and reducing the lead angle to half that of a single-threaded implant compared with a double-threaded implant.

show abstract

Section: Discussioncontrasting

confidence: 60%

Effects of implant thread design on primary stability—a comparison between single- and double-threaded implants in an artificial bone model

et al. 2020

View full text Add to dashboard Cite

show abstract

“…Regarding immediate provisionalization, while most reports indicate that this procedure has similar esthetic results when compared to conventional loading protocols [42], it is paramount to recognize the technical challenge of this approach as well as the importance of the implant design. In this study, the implant had a tapered geometry, which enables implant placement between adjacent natural teeth [6], provides high primary stability [43][44][45][46], and improves esthetics by allowing a gradual expansion of the alveolar ridge [7]. Furthermore, the implant-abutment connection was conical, which is known to be tight and mechanically stable, and provides a built-in platform shift that has been shown to reduce inflammation and bone loss in peri-implant tissues [10] as well as to support favorable esthetic results [47].…”

Section: Discussionmentioning

confidence: 99%

Immediately provisionalized tapered conical connection implants for single-tooth restorations in the maxillary esthetic zone: a 5-year prospective single-cohort multicenter analysis

et al. 2022

View full text Add to dashboard Cite

Objectives This open, single-cohort, multicenter, prospective study investigated the efficacy of immediately provisionalized tapered conical connection implant for single-tooth restorations in the anterior and premolar regions of the maxilla after 5 years of function. Materials and methods All implants were placed in healed sites and immediately provisionalized. MBLs, soft-tissue parameters, and oral-health impact profile (OHIP) were evaluated at implant insertion, 6, 12, 24, 36, and 60 months. Paired Wilcoxon signed-rank tests and Kaplan–Meier survival analysis was used for statistical and implant survival/success analyses, respectively. Results Seventy-seven patients (81 implants) completed the 5-year follow-up. The 5-year cumulative survival and success rates were 97.8%, and the mean MBL change from implant insertion to 5 years was − 0.80 ± 1.13 mm. Optimal papilla index scores were observed at 90.1% of sites at 5 years compared with 32.8% of sites at insertion. Pink esthetic score, modified bleeding and plaque indices, and OHIP showed statistically significant improvement at the 5-year follow-up. Conclusions Immediately provisionalized tapered conical connection implants promote marginal bone stability and excellent esthetic outcomes after 5 years of function. Clinical relevance This treatment is a viable option for patients requiring immediately provisionalized single-tooth restorations in the esthetic zone and shows favorable long-term clinical outcomes, including marginal bone stability and excellent esthetics.

show abstract

“…RFA analysis is the most accepted method for evaluating implant stability [ 26 – 29 ]. RT value is another marker for evaluating stability [ 30 ]. Tabassum et al reported a correlation between RFA and RT values [ 31 , 32 ].…”

Section: Discussionmentioning

confidence: 99%

Does hyperbaric oxygen therapy pressure reduce mechanical stability of implants?

Özyurt

2022

J Mater Sci: Mater Med

View full text Add to dashboard Cite

Hyperbaric oxygen therapy (HBOT) has beneficial effects for patients complaining of poor bone healing such as related to diabetes mellitus. However, it is known that changing pressure conditions might cause dental barotrauma in the oral cavity. The aim of this study was to evaluate implant mechanical stability under HBOT pressure. Thirty-five implants were placed in bone blocks divided into five groups as control, 1, 3, 5, 7 HBOT cycles. In one cycle, 2.4 bar 100% oxygen pressure was performed. Implants’ stabilities were measured with resonance frequency analysis (RFA) and removal torque (RT) meter device. Data were analyzed using Shapiro Wilk, ANOVA, and Tukey HSD tests for RFA and RT values considering p < 0.05 as the statistical significance level. RFA and RT values were compared by Pearson correlation coefficiency. RFA values of 5 and 7 HBOT cycles were significantly lower than 1, 3 HBOT and control group (p < 0.001). There was no statistical difference between 5 and 7 HBOT cycles RFA values. HBOT pressure simulation slightly but statistically decreased the stability for the implants exposed to 5 and 7 HBOT cycles.

show abstract

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

Cited by 7 publications

References 31 publications

Effects of implant thread design on primary stability—a comparison between single- and double-threaded implants in an artificial bone model

Effects of implant thread design on primary stability—a comparison between single- and double-threaded implants in an artificial bone model

Immediately provisionalized tapered conical connection implants for single-tooth restorations in the maxillary esthetic zone: a 5-year prospective single-cohort multicenter analysis

Does hyperbaric oxygen therapy pressure reduce mechanical stability of implants?

Contact Info

Product

Resources

About