Effect of pre-drilling on intraosseous temperature during self-drilling mini-implant placement in a porcine mandible model

Gurdán, Zsuzsanna; Vajta, László; Tóth, Arnold; Lempel, Edina; Joób-Fancsaly, Árpád; Szalma, József

doi:10.2334/josnusd.16-0316

Cited by 9 publications

(13 citation statements)

References 28 publications

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“…Literature data shows in agreement that temperatures increase with an increasing drilling speed, up to 10000 rpm [1, 14, 16]. This was seen in one of our earlier study also, where during mini-implant predrilling with spiral drills drilling at 100 or 200 rpm produced significantly less heat than at 1200 rpm (≤3°C versus 12.3°C) [18]. In addition, the current investigation showed a further significant temperature rise between 16000 and 40000 rpm drillings.…”

Section: Discussionsupporting

confidence: 74%

“…Our earlier study, investigating the same drills, indicated clearly that, after 20 and 30 coronectomies, drills show significant signs of wear (i.e., fractured cutting edges, missing cross cuts), while temperatures (2.2-3.3x) and drilling times (5.3-12.5x) increased significantly compared to the new drill [2]. In contrast, our other investigation using mini-implant predrills showed temperature increases only after 150 usages [18]. Additionally, Marenzi et al (2018) identified surface micromorphology of the drills as an important factor which may contribute to intraosseous heat productions [24].…”

Section: Discussionmentioning

confidence: 92%

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Recommended Drilling Parameters of Tungsten Carbide Round Drills for the Most Optimal Bone Removals in Oral Surgery

Szalma

Klein

Lovász

et al. 2018

BioMed Research International

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Background High temperatures during drilling can cause thermal osteonecrosis and abnormal wound healing. According to our best knowledge, a widely accepted recommendation for optimal drilling parameters in routine oral surgery bone removals does not exist. Purpose Our aim was to investigate the correlations of different drilling parameters, including axial load and revolution speed on drilling temperatures and preparation times. Materials and Methods Standard, 5 mm deep cavities were drilled in 20 PCF (lb/ft3) dens polyurethane blocks with 3 mm (50PCF) cortical layer using new and worn, 3.1mm in diameter tungsten carbide round drills. Worn drills were used in 50 impacted third molar operations before. Axial loads of 3N, 10N, and 25N and speeds of 4.000-8.000-16.000-40.000 revolutions per minute (rpm) were tested. Temperature differences of drilling parameters were calculated by 1-way ANOVA, followed by Tukey's HSD post hoc tests. Time differences and differences among “optimal” and “suboptimal” groups (with the cut-off value of 3°C and 3s) were estimated by Kruskal-Wallis test with pairwise comparisons. P<0.05 was considered significant. Results The highest mean temperatures with new and worn drills were 4.64±0.53°C and 6.89±1.16°C, while drilling times varied between 0.16±0.02s and 22.77±5.45s. A 3°C and 3s cut-off value classified drillings significantly to (1) optimal [3N and 8000-16000-40000 rpm or 10N and 4000-8000-16000-40000 rpm] or suboptimal due to (2) high temperatures or (3) long preparation times. Using worn drills, the following parameters should be avoided: 3N with 4.000-8.000 rpm, 10N with 40000 rpm, and 25N at any revolutions. Discussion The study extensively mapped the drilling temperatures and preparation times of tungsten carbide round drills. Temperatures did not exceed 10°C during drillings with maximal amount of cooling, as well as the drilling parameters, which kept temperatures and preparation times in the most optimal range which were clearly established.

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Section: Discussionsupporting

confidence: 74%

Section: Discussionmentioning

confidence: 92%

Recommended Drilling Parameters of Tungsten Carbide Round Drills for the Most Optimal Bone Removals in Oral Surgery

Szalma

Klein

Lovász

et al. 2018

BioMed Research International

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“…The influence of the heat generated by the drilling procedures was likely to be excluded since one minute elapsed before the implant installation. Previous research indicated that the bone returned to baseline temperature after approximately 30 s [38].…”

Section: Discussionmentioning

confidence: 99%

Intraosseous Temperature Change during Installation of Dental Implants with Two Different Surfaces and Different Drilling Protocols: An In Vivo Study in Sheep

Stocchero

Jinno

Toia

et al. 2019

JCM

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Background: The intraosseous temperature during implant installation has never been evaluated in an in vivo controlled setup. The aims were to investigate the influence of a drilling protocol and implant surface on the intraosseous temperature during implant installation, to evaluate the influence of temperature increase on osseointegration and to calculate the heat distribution in cortical bone. Methods: Forty Brånemark implants were installed into the metatarsal bone of Finnish Dorset crossbred sheep according to two different drilling protocols (undersized/non-undersized) and two surfaces (moderately rough/turned). The intraosseous temperature was recorded, and Finite Element Model (FEM) was generated to understand the thermal behavior. Non-decalcified histology was carried out after five weeks of healing. The following osseointegration parameters were calculated: Bone-to-implant contact (BIC), Bone Area Fraction Occupancy (BAFO), and Bone Area Fraction Occupancy up to 1.5 mm (BA1.5). A multiple regression model was used to identify the influencing variables on the histomorphometric parameters. Results: The temperature was affected by the drilling protocol, while no influence was demonstrated by the implant surface. BIC was positively influenced by the undersized drilling protocol and rough surface, BAFO was negatively influenced by the temperature rise, and BA1.5 was negatively influenced by the undersized drilling protocol. FEM showed that the temperature at the implant interface might exceed the limit for bone necrosis. Conclusion: The intraosseous temperature is greatly increased by an undersized drilling protocol but not from the implant surface. The temperature increase negatively affects the bone healing in the proximity of the implant. The undersized drilling protocol for Brånemark implant systems increases the amount of bone at the interface, but it negatively impacts the bone far from the implant.

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“…It is often associated with sedentary life style, obesity, smoking and physically demanding jobs such as heavy weight lifting, physical and mental comorbidities 2 . Though, LBP affects all age groups, disability related to it is predominant in working population and most troublesome in low and middle-income countries where it has risen by more than 50% since 1990 3,4 .LBP affects the physical, emotional and social functioning of the affected individual. The imposed biophysical limitations impair physical functioning and adversely affect the general health and reconditioning (weight gain and loss of muscle tone) 5 .…”

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confidence: 99%

mentioning

confidence: 99%

Psychosocial morbidity profile in a community based sample of low back pain patients

Asrar

Ghai

Pushpendra

et al. 2021

Sci Rep

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Low back pain (LBP) is a major health concern and is closely associated with psychosocial morbidity and diminished Health-related quality of life (HRQoL). This is minimally investigated in community-based samples of developing nations like India. This study is aimed to specifically investigate the exposure-outcome associations between LBP and burden of disability (Modified Oswestry questionnaire (MODQ)), psychological morbidities (Depression, Anxiety and Stress Scale (DASS-21)), and HRQoL (Short Form -12 version 2 (SF12V2). A Cross-sectional study using a community-based sample of LBP positive population was conducted. The range of treatment options sought was also collected. Chi-square tests and independent t-test were used to analyze the data. Of 1531 recruited participants, 871(57%) were identified as LBP positive of whom 60% were females. Mean (SD) of age and pain intensity of LBP patients was 33 (11) years and numeric rating scale4.2 (2.6) respectively. Two-third reported minimal/moderate disability. Mean (SD) scores of depression 11.87 (4.05), anxiety (8.32), stress 13.7 (5.98), physical and mental summary scores of SF-12v2 were 47.9 (7.4) and 42.2 (10.4). A multitude of remedial options was sought for the ailment. LBP causes significant disability and psychological morbidity among affected population. This may adversely affect their HRQoL and subsequently productivity. Acupuncture was a preferred treatment sought by Indian LBP patients.

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Effect of pre-drilling on intraosseous temperature during self-drilling mini-implant placement in a porcine mandible model

Cited by 9 publications

References 28 publications

Recommended Drilling Parameters of Tungsten Carbide Round Drills for the Most Optimal Bone Removals in Oral Surgery

Recommended Drilling Parameters of Tungsten Carbide Round Drills for the Most Optimal Bone Removals in Oral Surgery

Intraosseous Temperature Change during Installation of Dental Implants with Two Different Surfaces and Different Drilling Protocols: An In Vivo Study in Sheep

Psychosocial morbidity profile in a community based sample of low back pain patients

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