Temperature Values Variability in Piezoelectric Implant Site Preparation: Differences between Cortical and Corticocancellous Bovine Bone

Lamazza, Luca; Garreffa, Girolamo; Laurito, Domenica; Lollobrigida, Marco; Palmieri, Luigi; Biase, Alberto De

doi:10.1155/2016/6473680

Cited by 14 publications

(17 citation statements)

References 26 publications

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“…Temperature elevation during conventional and piezoelectric instrumentation is a complex phenomenon encompassing a wide variety of elements. As reported in a previous study [22], these factors can be grouped into three different categories: operator-, bone-, and technique-related factors. If it is possible to reduce the negative effects of operator-and technique-related factors, bone characteristics can influence thermal behavior independently.…”

Section: Discussionmentioning

confidence: 96%

Piezoelectric Implant Site Preparation: Influence of Handpiece Movements on Temperature Elevation

et al. 2020

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Piezoelectric devices are widely used in oral surgical procedures, including implant site preparation. However, little is known about the influence of working movement on temperature elevation in bone. The aim of this study was to assess the effects of two different working cycles on temperature elevation during piezoelectric implant site preparation. Sixty osteotomies at a depth of 10 mm were performed on bone blocks of bovine ribs using a piezoelectric tip with external irrigation (IM1s, Mectron Medical Technology, Carasco, Italy). A mechanical positioning device was used to guarantee reproducible working and measuring conditions. Two different working cycles, of 4 and 6 s, respectively, were tested, including both longitudinal and rotational movements. Temperature was recorded in real time with a fiber optic thermometer and applied pressure was maintained under 150 g. For each test, the highest recorded temperature (Tmax) and the mean temperature recorded from 30 s before to 30 s after the highest recorded temperature (T±30) were extrapolated. Tests duration was also recorded. Both Tmax and T±30 were significantly higher in the ‘6 s cycles’ group than the ‘4 s cycles’ group (42.44 ± 7.3 °C vs. 37.24 ± 4.6 °C, p = 0.002; 37.24 ± 4.6 °C vs. 33.30 ± 3.3 °C, p = 0.003). Test duration was also significantly higher using 6 s cycles compared to 4 s cycles (143.17 ± 29.4 s vs. 119.80 ± 36.4 s, p = 0.002). The results of this study indicate that working cycles of 4 s effectively reduce heat generation and working time during piezoelectric implant site preparation.

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Section: Discussionmentioning

confidence: 96%

Piezoelectric Implant Site Preparation: Influence of Handpiece Movements on Temperature Elevation

et al. 2020

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“…Therefore, to ensure the reliability of our findings, all the tests were performed on standardised bone samples. Previous studies [10][11][12][13][14] showed that the ultrasonic system takes more time to perforate the bone when compared with the conventional system. This can be associated with the time of frictional force of the active tips during the osteotomies 15 .…”

Section: Discussionmentioning

confidence: 99%

“…To date, no data are available concerning standardisation of the bone density and cortical bone thickness in an in vitro comparative study. Lamazza et al 11 used sectioned ribs of a young bovine where the ultrasonic system had even higher temperatures with a mean of 40.07°C and 44.06°C for cortical and cortical-cancellous bone respectively. Rashad et al 13 standardised the bone samples temperatures previous perforation and showed that prolonged time of osteotomies with the tips of the ultrasonic system is associated with higher bone temperatures when compared with conventional drilling.…”

Section: Discussionmentioning

confidence: 99%

In vitro comparison of dental implant site preparation with ultrasonic system and conventional rotatory system

et al. 2019

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Aim: To compare in vitro the site preparation of dental implant using a rotatory system and an ultrasonic system by evaluating the variability of temperature, time and primary stability that is provided by the different sequences of dental implant drills and tips. Materials and methods: Sixteen osteotomies were performed with different sequences of drills (Initial, Titamax 2.0, 2/3 and 3.0) for the rotatory group (RG) and tips (IM1S, IM2P, IM2/3, IM3P) for the ultrasonic group (UG) on bovine cortical-cancellous bone samples. Micro-CT images were acquired to assess bone microarchitecture and bone mineral density of each sample to guarantee similar bone conditions. For the RG, the osteotomies were performed with a dental implant contra-angle handpiece at 800 rpm and 50 N/cm maximum torque using an implant micromotor. For the UG, the osteotomies were performed using a Piezosurgery3 system with the respective tip. The temperature was measured and four implants 3.75 9 11 Titamax were installed in each group to measure the final torque. Results: For the RG, the following mean values were found: 22.87 s, 24.2°C superficial temperature, 27.6°C perforation temperature and 32.30 N/cm torque. The UG values were 72.9 s, 26.6°C superficial temperature, 32.1°C perforation temperature and 22.60 N/cm torque. Conclusions: Rotatory and ultrasonic systems are effective methods for implant site preparation with satisfactory outcomes. For corticalcancellous preparation sites, the drills of the RG were related to lower temperatures and less time for osteotomy. Thus, the use of rotatory systems is preferred due to the heat differential generated during the dental implant sites preparation. Clinical relevanceScientific rationale for study Osteotomy techniques are superior due to greater precision when performed with ultrasonic systems; however, data on temperature and surgical times related to such systems are still controversial in the literature when compared to conventional rotatory systems. Principal findingsRotatory system was related to lower temperatures and less time for osteotomy during dental implant sites preparation.Oral Surgery 13 (2020) 108--116.

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“…It was observed that interconnectivity and porosity are essential to promote cell culture, tissue growth, loading and migration of cells, tissue growth, and flow of body fluid [10][11][12][13]. At present, a number of researchers [5,6,[14][15][16][17][18][19][20][21] are working with non-conventional techniques and state-of-the-art fused deposition modeling (FDM) is one of them. This technique has been becoming most popular in biomedical field owing to its high flexibility of producing different shaped implants, 3D faxing, and green manufacturing nature.…”

Section: Introductionmentioning

confidence: 99%

Synthesis, characterization, and bioactivity investigation of biomimetic biodegradable PLA scaffold fabricated by fused filament fabrication process

Singh

Babbar

Jain

et al. 2019

J Braz. Soc. Mech. Sci. Eng.

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Nowadays polylactic acid (PLA) is widely used in orthopedics surgeries as implants material due to well mechanical characterization and biomedical properties. But the PLA implants suffer from slow degradation rate when it is used in real-life scenario. In the present research work, the PLA specimens using additive manufacturing technique are fabricated and further assessed for mechanical characterization and its degradation behavior with different parameters. The change in weight of scaffolds was measured using digital weight measure, and pH value was measured using pH meter. Morphology and elemental composition of PLA scaffolds were characterized by SEM and EDS, respectively, while compressive strength is measured by the universal testing machine. Apatite formation and biocompatible nature of fabricated scaffolds were analyzed by in vitro simulated body fluid study. The outcomes of characterization exposed that scaffold with 60% infill percentage had maximum porosity, which is beneficial for the apatite formation and osseointegration. The average change in compressive strength was measured as 49.79 MPa after 14 days and 46.11 MPa after 28 days, whereas the average change in pH value was measured as 5.67 and 5.27 after 14 and 28 days of incubation period, respectively. The degradation rate of specimen 3 was 27.92% less than that of specimen 1, 35.69% less than that of specimen 5, and 87.98% more than that of specimen 9. This study concludes the positive effect of process parameters on degradation rate and biocompatible behavior of PLA implants.

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Temperature Values Variability in Piezoelectric Implant Site Preparation: Differences between Cortical and Corticocancellous Bovine Bone

Cited by 14 publications

References 26 publications

Piezoelectric Implant Site Preparation: Influence of Handpiece Movements on Temperature Elevation

Piezoelectric Implant Site Preparation: Influence of Handpiece Movements on Temperature Elevation

In vitro comparison of dental implant site preparation with ultrasonic system and conventional rotatory system

Synthesis, characterization, and bioactivity investigation of biomimetic biodegradable PLA scaffold fabricated by fused filament fabrication process

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