Abstract
OBJECTIVE: To perform a detailed quantitative analysis of the effect of intermittent drilling and irrigation to lower the temperature during high- speed drilling. METHODS: We examined the thermal changes for 15 bone flaps while drilling a 7- x 7-mm area for 18 seconds and a specific point for 9 seconds, under the following conditions: continuous or intermittent drilling; with a fluted steel or a diamond ball cutter; without or with irrigation, with room temperature or cold (8°C) Ringer solution. RESULTS: The maximum temperature during continuous drilling with a diamond cutter (or steel cutter) was 82.4 ± 1.3°C (55.2 ± 1.0°C) without irrigation, 42.5 ± 1.2°C (35.4 ± 0.9°C) with room temperature Ringer irrigation, and 22.5 ± 1.4°C (21.6 ± 0.3°C) with cold Ringer irrigation, whereas that during intermittent drilling was 66.1 ± 1.2°C (35.6 ± 0.8°C), 35.0 ± 0.8°C (25.4 ± 0.7°C), and 21.5 ± 0.6°C (21.8 ± 0.4°C), respectively. During continuous drilling of a specific point, the radius of the concentric isothermal line for 43°C (thermal threshold for neurons) was 3.6 ± 0.8 mm with a steel cutter, and it was 8.1 ± 0.3 mm with a diamond cutter. The radius was 4.2 ± 0.8 mm during intermittent drilling with a diamond cutter, and it was 4.0 ± 0.1 mm during continuous drilling with room temperature Ringer irrigation. Intermittent drilling with cold Ringer irrigation kept the temperature, even at the center of the drilled area, below 20°C. CONCLUSION: Intentional intermittent drilling with irrigation reduces temperature elevation and its expansion. These procedures are necessary for safe drilling, especially with a diamond burr. Although cold irrigation can minimize temperature elevation, its substantial effect on nerves or other structures needs to be elucidated.
| Original language | English |
|---|---|
| Pages (from-to) | 1162-1168 |
| Number of pages | 7 |
| Journal | Neurosurgery |
| Volume | 46 |
| Issue number | 5 |
| Publication status | Published - 2000 May |
| Externally published | Yes |
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Keywords
- Cranial base surgery
- Experimental
- Heat injury
- High-speed drill
- Instrumentation
- Minimally invasive operation
- Skull base surgery
- Thermology
ASJC Scopus subject areas
- Clinical Neurology
- Surgery
Cite this
Thermological study of drilling bone tissue with a high-speed drill. / Kondo, Soichiro; Okada, Yoshikazu; Iseki, Hiroshi; Hori, Tomokatsu; Takakura, Kintomo; Kobayashi, Akira; Nagata, Hirokazu.
In: Neurosurgery, Vol. 46, No. 5, 05.2000, p. 1162-1168.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Thermological study of drilling bone tissue with a high-speed drill
AU - Kondo, Soichiro
AU - Okada, Yoshikazu
AU - Iseki, Hiroshi
AU - Hori, Tomokatsu
AU - Takakura, Kintomo
AU - Kobayashi, Akira
AU - Nagata, Hirokazu
PY - 2000/5
Y1 - 2000/5
N2 - OBJECTIVE: To perform a detailed quantitative analysis of the effect of intermittent drilling and irrigation to lower the temperature during high- speed drilling. METHODS: We examined the thermal changes for 15 bone flaps while drilling a 7- x 7-mm area for 18 seconds and a specific point for 9 seconds, under the following conditions: continuous or intermittent drilling; with a fluted steel or a diamond ball cutter; without or with irrigation, with room temperature or cold (8°C) Ringer solution. RESULTS: The maximum temperature during continuous drilling with a diamond cutter (or steel cutter) was 82.4 ± 1.3°C (55.2 ± 1.0°C) without irrigation, 42.5 ± 1.2°C (35.4 ± 0.9°C) with room temperature Ringer irrigation, and 22.5 ± 1.4°C (21.6 ± 0.3°C) with cold Ringer irrigation, whereas that during intermittent drilling was 66.1 ± 1.2°C (35.6 ± 0.8°C), 35.0 ± 0.8°C (25.4 ± 0.7°C), and 21.5 ± 0.6°C (21.8 ± 0.4°C), respectively. During continuous drilling of a specific point, the radius of the concentric isothermal line for 43°C (thermal threshold for neurons) was 3.6 ± 0.8 mm with a steel cutter, and it was 8.1 ± 0.3 mm with a diamond cutter. The radius was 4.2 ± 0.8 mm during intermittent drilling with a diamond cutter, and it was 4.0 ± 0.1 mm during continuous drilling with room temperature Ringer irrigation. Intermittent drilling with cold Ringer irrigation kept the temperature, even at the center of the drilled area, below 20°C. CONCLUSION: Intentional intermittent drilling with irrigation reduces temperature elevation and its expansion. These procedures are necessary for safe drilling, especially with a diamond burr. Although cold irrigation can minimize temperature elevation, its substantial effect on nerves or other structures needs to be elucidated.
AB - OBJECTIVE: To perform a detailed quantitative analysis of the effect of intermittent drilling and irrigation to lower the temperature during high- speed drilling. METHODS: We examined the thermal changes for 15 bone flaps while drilling a 7- x 7-mm area for 18 seconds and a specific point for 9 seconds, under the following conditions: continuous or intermittent drilling; with a fluted steel or a diamond ball cutter; without or with irrigation, with room temperature or cold (8°C) Ringer solution. RESULTS: The maximum temperature during continuous drilling with a diamond cutter (or steel cutter) was 82.4 ± 1.3°C (55.2 ± 1.0°C) without irrigation, 42.5 ± 1.2°C (35.4 ± 0.9°C) with room temperature Ringer irrigation, and 22.5 ± 1.4°C (21.6 ± 0.3°C) with cold Ringer irrigation, whereas that during intermittent drilling was 66.1 ± 1.2°C (35.6 ± 0.8°C), 35.0 ± 0.8°C (25.4 ± 0.7°C), and 21.5 ± 0.6°C (21.8 ± 0.4°C), respectively. During continuous drilling of a specific point, the radius of the concentric isothermal line for 43°C (thermal threshold for neurons) was 3.6 ± 0.8 mm with a steel cutter, and it was 8.1 ± 0.3 mm with a diamond cutter. The radius was 4.2 ± 0.8 mm during intermittent drilling with a diamond cutter, and it was 4.0 ± 0.1 mm during continuous drilling with room temperature Ringer irrigation. Intermittent drilling with cold Ringer irrigation kept the temperature, even at the center of the drilled area, below 20°C. CONCLUSION: Intentional intermittent drilling with irrigation reduces temperature elevation and its expansion. These procedures are necessary for safe drilling, especially with a diamond burr. Although cold irrigation can minimize temperature elevation, its substantial effect on nerves or other structures needs to be elucidated.
KW - Cranial base surgery
KW - Experimental
KW - Heat injury
KW - High-speed drill
KW - Instrumentation
KW - Minimally invasive operation
KW - Skull base surgery
KW - Thermology
UR - http://www.scopus.com/inward/record.url?scp=0034071243&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=0034071243&partnerID=8YFLogxK
M3 - Article
VL - 46
SP - 1162
EP - 1168
JO - Neurosurgery
JF - Neurosurgery
SN - 0148-396X
IS - 5
ER -