Implant design and intraosseous stability of immediately placed implants: a human cadaver study

Akkocaoğlu, Murat; Uysal, Serdar; Tekdemi̇r, İbrahi̇m; Akca, Kitoavanc; Çehreli, Murat Cavit

doi:10.1111/j.1600-0501.2004.01099.x

Cited by 115 publications

(130 citation statements)

References 22 publications

Supporting

Mentioning

107

Contrasting

Unclassified

Order By: Relevance

“…This fixation is necessary for further osseointegration of the inserted surfaces of the implant with the surrounding bone [4]. Many factors may influence this process, including implant shape, diameter, length, angulation [5,6], surface treatment, bone quality, and surgical technique [7,8]. Lin et al found that the implant shape was an important determinant of stress distribution and has a more pronounced effect than implant length or diameter [9].…”

Section: Introductionmentioning

confidence: 99%

Biomechanical analysis of alveolar bone stress around implants with different thread designs and pitches in the mandibular molar area

Lan

Pan

et al. 2011

Clin Oral Invest

View full text Add to dashboard Cite

Threaded implants have been shown to play an important role in increasing mechanical osseointegration. The aim of this study was to determine bone stress distribution when using different types of implant thread pitches and designs. Five 3D finite element models were constructed to simulate bone stresses induced in implant bodies with two types of thread form: triangular ("Tri" prefix) and trapezoidal ("Trap" prefix). The former had thread pitches of 0.8, 1.2, and 1.6 mm, while the latter had thread pitches of 1.2 and 1.6 mm. A biting load of 143 N was applied vertically and obliquely to the occlusal central fossa of the crown. The main effects of each level of the three factors investigated (loading type, pitch, and thread form) in terms of the stress value were computed for all models. Results indicated that the loading type was the main factor of influence on the peak compressive stress of the alveolar bone. Optimal thread pitch was 1.2 mm for a triangular-thread implant, and a trapezoidal-threaded implant with thread pitch of 1.6 mm had the lowest stress value among trapezoidal-threaded implants. This study concluded that each thread form has its unique optimal thread pitch with regard to lower concentration of bone stress. Clinically, this study suggests that in biomechanical consideration, thread pitch exceeding 0.8 mm is more appropriate for a screwed implant. For clinical cases that require greater bone-implant interface, trapezoidal-threaded implants with thread pitch of 1.6 mm provide greater primary stability and lower concentration of bone stress under different loading directions.

show abstract

Section: Introductionmentioning

confidence: 99%

Biomechanical analysis of alveolar bone stress around implants with different thread designs and pitches in the mandibular molar area

Lan

Pan

et al. 2011

Clin Oral Invest

View full text Add to dashboard Cite

show abstract

“…After testing 276 immediate loaded implants using RFA, Balshi et al suggested that bone types II and III were more consistent in term of stability return, while bone types I and IV were not 19) . Primary stability, a function of bone quality, implant design, and surgical procedure, is one of the important factors that influences the survival rate of implants 17,20,27) . It has been reported that primary stability can serve as a useful predictor of osseointegration 16) .…”

Section: Discussionmentioning

confidence: 99%

“…The resonance frequency value thus obtained is converted to give an Implant Stability Quotient (ISQ) for analyzing implant stability [9][10][11][12] . Recently, this device has been used in implant research to perform the following tasks: compare the success rates between conventional and early loading of implants [13][14] , evaluate the survival rates of transmucosal implants immediately restored with single crowns 15) , monitor the differences between immediate and standard delayed loading of implants [16][17][18] , profile physiological and geometric factors affecting immediate loaded implants [19][20] , and measure stability achieved with one-stage surgical procedures [21][22] . However, clinical investigation has indicated that temporary attachment, removal, and sterilization of the transducer are time-consuming and far from being cost-effective 17) .…”

Section: Introductionmentioning

confidence: 99%

A Newly Designed Resonance Frequency Analysis Device for Dental Implant Stability Detection

Chang

Lee

et al. 2007

Dent. Mater. J.

View full text Add to dashboard Cite

Resonance frequency (RF) analysis technology was used to design a new dental implant stability detector. To calibrate and test the performance of this novel apparatus, in vitro and in vivo models, respectively, were used. The RF values of the test implants detected using our new device and a commercially available analogous device (Osstell) were compared. Further, implant stability status was also detected clinically using our device at 2, 4, 8, and 12 weeks after surgery. A high correlation was demonstrated between the values measured with the two devices (y ＝ 0.31x-12.45; R 2 ＝ 0.98, p<0.05). In our clinical tests, an initial RF value above 10.0 kHz indicated that the implant was ready to accept functional loading, while values in the 4.0-10.0 kHz range reflected the need for further osseointegration. In conclusion, these results indicated that our new device might be useful in a clinical setting for evaluating the healing status of a placed implant.

show abstract

“…Higher bone density creates greater bone-implant contact and consequently, it increases the primary stability. On the other hand, a low bone density is associated to a higher implant failure rate 6,7 . Clinical studies shows that implants placed in the jaw present higher survival rates compared to the ones placed on the maxilla 8,9 , especially when considered the maxillary posterior region witch usually presents a thinner cortical bone combined with thicker trabecular bone 10 .…”

Section: Introductionmentioning

confidence: 99%

Combining the effects of undersized drilling and bone density on implant insertion torque

Camargo

Nunes

Spazzin³

et al. 2017

Braz. J. Oral Sci.

View full text Add to dashboard Cite

Aim: This study evaluated the influence of surgical undersized drilling on insertion torque of an implant system at low bone density. Methods: Implant site preparations were made in two polyurethane foam blocks with different densities, where two preparation techniques were considered: Control group (C): conventional drilling, following the manufacturer's instructions; and Group (E): undersized drilling, experimental technique using a final surgical drill with reduced diameter. The artificial bone blocks were selected based on density: D 1 (0.64 g/cm 3 ) and D 2 (0.32 g/cm 3 ). Three groups were considered according to the preparation technique and bone density used (n=10): CD 1 -conventional drilling technique in artificial bone with higher density; CD 2 -conventional drilling technique in artificial bone with lower density; and ED 2 -undersized drilling in artificial bone with lower density. Externalhexagon implants (11 × 4 mm) were inserted and the insertion torque values were measured using a digital torque-meter. Data were submitted to one-way ANOVA followed by Tukey's test (α=0.05). Results: The results showed significant statistical differences between groups (p<0.001), where the highest insertion torque was found for the Group CD 1 (48.9 Ncm) followed by Group ED 2 (22.6 Ncm) and Group CD 2 (11.7 Ncm). Conclusions: The undersized drilling technique for implant site preparation leads to increased insertion torque on low bone density.

show abstract

Implant design and intraosseous stability of immediately placed implants: a human cadaver study

Abstract: Immediately placed ITI TE implant leads to initial intraosseous stability and interface mechanical properties comparable with a wide diameter implant.

Cited by 115 publications

References 22 publications

Biomechanical analysis of alveolar bone stress around implants with different thread designs and pitches in the mandibular molar area

Biomechanical analysis of alveolar bone stress around implants with different thread designs and pitches in the mandibular molar area

A Newly Designed Resonance Frequency Analysis Device for Dental Implant Stability Detection

Combining the effects of undersized drilling and bone density on implant insertion torque

Contact Info

Product

Resources

About