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Mafrici C, Kingston M, Grice R, Abbott PV. The Effect of Water Coolant and Bur Type on Pulp Temperature When Removing Tooth Structure and Restorative Dental Materials. Oper Dent 2024; 49:91-97. [PMID: 38057997 DOI: 10.2341/23-033-l] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 09/01/2023] [Indexed: 12/08/2023]
Abstract
OBJECTIVE The aim was to compare intrapulp temperature (IPT) changes when flat-fissure diamond burs and pear-shaped tungsten carbide burs were used to cut tooth structure, amalgam, and composite resin with and without water coolant. METHODS Thermocouples were inserted into the pulp chamber of extracted intact mandibular molars. The thermocouples were connected to an electronic thermometer that detects temperature every second to an accuracy of 0.1°C. IPT changes were recorded while using a high-speed handpiece during MOD cavity preparations (n=40), composite resin removal (n=40), and amalgam removal (n=40). A two-way ANOVA was used for each procedure to test for the effect of bur (pear-shaped tungsten carbide vs flat-fissured diamond) and water coolant (on vs off), with significant main effects (α=0.05) further analyzed using Tukey's multiple comparison test. RESULTS During MOD cavity preparation, water coolant reduced changes in IPT (0.03±0.27°C) compared to no water coolant (1.27±0.29°C) when tungsten carbide burs were used (p<0.05) but not when diamond burs were used. During composite resin removal, tungsten carbide burs had less changes in IPT (0.55±0.18°C) compared to diamond burs (1.66±0.50°C) with no water coolant (p<0.05). Water coolant also reduced changes in IPT (0.09±0.14°C) compared to no water coolant (1.66±0.50°C) when diamond burs were used (p<0.01). Water coolant did not significantly affect IPT when tungsten carbide burs were used. During amalgam removal, tungsten carbide burs had lower changes in IPT (0.56±0.15°C) compared to diamond burs (1.88±0.43°C) with no water coolant (p<0.05). Water coolant also significantly reduced changes in IPT (0.71±0.2°C) compared to no water coolant (1.88±0.43°C) when diamond burs were used (p<0.05) but not when tungsten carbide burs were used. CONCLUSIONS Water coolant reduced IPT changes when drilling tooth structure with tungsten carbide burs, but not when removing amalgam or composite. Conversely, water coolant reduced IPT changes when drilling with flat fissure diamond burs to remove amalgam and composite, but not when removing tooth structure. When amalgam and composite were removed without water coolant, the tungsten carbide burs resulted in lower IPT changes than when flat fissure diamond burs were used in the same way.
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Affiliation(s)
- C Mafrici
- Christopher Mafrici, BSc(Hons), DMD, UWA Dental School, The University of Western Australia, Nedlands, WA, Australia
| | - M Kingston
- Morgan Kingston, BSc(Hons), DMD, UWA Dental School, The University of Western Australia, Nedlands, WA, Australia
| | - R Grice
- Ryan Grice, BMedSc, DMD, UWA Dental School, The University of Western Australia, Nedlands, WA, Australia
| | - P V Abbott
- *Paul V. Abbott, BDSc, MDS, DDSc, FRACDS(Endo), emeritus professor, UWA Dental School, The University of Western Australia, Nedlands, WA, Australia
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Affiliation(s)
- P.A. Gorry
- a Chemistry Department , University of Manchester , Manchester , M13 9PL , England
| | - C.V. Nowikow
- a Chemistry Department , University of Manchester , Manchester , M13 9PL , England
| | - R. Grice
- a Chemistry Department , University of Manchester , Manchester , M13 9PL , England
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Affiliation(s)
- P.A. Gorry
- a Chemistry Department , University of Manchester , Manchester , M13 9PL , England
| | - C.V. Nowikow
- a Chemistry Department , University of Manchester , Manchester , M13 9PL , England
| | - R. Grice
- a Chemistry Department , University of Manchester , Manchester , M13 9PL , England
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Grice R, Smith D. Angular distributions of reactive scattering arising from persistent complexes with dissociation at arbitrary angles to the inertial axes of the transition state. Mol Phys 2006. [DOI: 10.1080/00268979300103201] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
Affiliation(s)
- R. Grice
- a Chemistry Department , University of Manchester , Manchester , M13 9PL , UK
| | - D.J. Smith
- a Chemistry Department , University of Manchester , Manchester , M13 9PL , UK
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Affiliation(s)
- D.P. Fernie
- a Chemistry Department , University of Manchester , Manchester , M13 9PL , England
| | - D.J. Smith
- a Chemistry Department , University of Manchester , Manchester , M13 9PL , England
| | - A. Durkin
- a Chemistry Department , University of Manchester , Manchester , M13 9PL , England
| | - R. Grice
- a Chemistry Department , University of Manchester , Manchester , M13 9PL , England
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Affiliation(s)
- N.C. Firth
- a Chemistry Department , University of Manchester , Manchester , M13 9PL , England
| | - N.W. Keane
- a Chemistry Department , University of Manchester , Manchester , M13 9PL , England
| | - D.J. Smith
- a Chemistry Department , University of Manchester , Manchester , M13 9PL , England
| | - R. Grice
- a Chemistry Department , University of Manchester , Manchester , M13 9PL , England
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Affiliation(s)
- I. Veltman
- a Chemistry Department , University of Manchester , Manchester , M13 9PL , England
- b British Gas, London Research Station , Michael Road, Fulham, London
| | - A. Durkin
- a Chemistry Department , University of Manchester , Manchester , M13 9PL , England
| | - D.J. Smith
- a Chemistry Department , University of Manchester , Manchester , M13 9PL , England
| | - R. Grice
- a Chemistry Department , University of Manchester , Manchester , M13 9PL , England
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Affiliation(s)
- A. Durkin
- a Chemistry Department , University of Manchester , Manchester , M13 9PL , England
| | - D.J. Smith
- a Chemistry Department , University of Manchester , Manchester , M13 9PL , England
| | - R. Grice
- a Chemistry Department , University of Manchester , Manchester , M13 9PL , England
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Affiliation(s)
- F.E. Davidson
- a Chemistry Department , University of Manchester , Manchester , M13 9PL , England
| | - A.R. Clemo
- a Chemistry Department , University of Manchester , Manchester , M13 9PL , England
| | - G.L. Duncan
- a Chemistry Department , University of Manchester , Manchester , M13 9PL , England
| | - R.J. Browett
- a Chemistry Department , University of Manchester , Manchester , M13 9PL , England
| | - J.H. Hobson
- a Chemistry Department , University of Manchester , Manchester , M13 9PL , England
| | - R. Grice
- a Chemistry Department , University of Manchester , Manchester , M13 9PL , England
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Affiliation(s)
- J.J. Harkin
- a Chemistry Department , University of Manchester , Manchester , M13 9PL , U.K
| | - D.J. Smith
- a Chemistry Department , University of Manchester , Manchester , M13 9PL , U.K
| | - R. Grice
- a Chemistry Department , University of Manchester , Manchester , M13 9PL , U.K
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Wang JJ, Zhu ZZ, Smith DJ, Grice R. Halogen Atom Abstraction Dynamics of Fluorine Atoms Reacting with Allyl Bromide and Iodobenzene Molecules. ACTA ACUST UNITED AC 2002. [DOI: 10.1021/j100093a019] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Rochford JJ, Powell LJ, Grice R. Transition State Dynamics of O(3P) + OCS, CS2 Reactive Scattering at Initial Translational Energy E .apprx. 85 kJ mol-1. ACTA ACUST UNITED AC 2002. [DOI: 10.1021/j100042a007] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Gao X, Essex-Lopresti J, Munro S, Hall MP, Smith DJ, Grice R. Role of Renner Teller and Spin−Orbit Interaction in the Dynamics of the O(3P) + CH2ICl Reaction. J Phys Chem A 1998. [DOI: 10.1021/jp973079b] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- X. Gao
- Chemistry Department, University of Manchester, Manchester, M13 9PL, U.K
| | - J. Essex-Lopresti
- Chemistry Department, University of Manchester, Manchester, M13 9PL, U.K
| | - S. Munro
- Chemistry Department, University of Manchester, Manchester, M13 9PL, U.K
| | - M. P. Hall
- Chemistry Department, University of Manchester, Manchester, M13 9PL, U.K
| | - D. J. Smith
- Chemistry Department, University of Manchester, Manchester, M13 9PL, U.K
| | - R. Grice
- Chemistry Department, University of Manchester, Manchester, M13 9PL, U.K
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Mohr S, Goonan KM, Wells DD, Grice R. Reactive Scattering of OD Radicals with ICl and Br2 Molecules at Initial Translational Energy E ∼ 90 kJ mol-1. J Phys Chem A 1997. [DOI: 10.1021/jp9722364] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- S. Mohr
- Chemistry Department, University of Manchester, Manchester, M13 9PL, U.K
| | - K. M. Goonan
- Chemistry Department, University of Manchester, Manchester, M13 9PL, U.K
| | - D. D. Wells
- Chemistry Department, University of Manchester, Manchester, M13 9PL, U.K
| | - R. Grice
- Chemistry Department, University of Manchester, Manchester, M13 9PL, U.K
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Wells DD, Mohr S, Goonan KM, Hammer M, Grice R. Role of Renner Teller and Spin−Orbit Interaction in the Reactive Scattering of O(3P) Atoms with CF3I Molecules. J Phys Chem A 1997. [DOI: 10.1021/jp970880c] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- D. D. Wells
- Chemistry Department, University of Manchester, Manchester, M13 9PL, U.K
| | - S. Mohr
- Chemistry Department, University of Manchester, Manchester, M13 9PL, U.K
| | - K. M. Goonan
- Chemistry Department, University of Manchester, Manchester, M13 9PL, U.K
| | - M. Hammer
- Chemistry Department, University of Manchester, Manchester, M13 9PL, U.K
| | - R. Grice
- Chemistry Department, University of Manchester, Manchester, M13 9PL, U.K
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Affiliation(s)
- J. J. Wang
- Chemistry Department, University of Manchester, Manchester M13 9PL, U.K
| | - D. J. Smith
- Chemistry Department, University of Manchester, Manchester M13 9PL, U.K
| | - R. Grice
- Chemistry Department, University of Manchester, Manchester M13 9PL, U.K
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Gao X, Hall MP, Smith DJ, Grice R. Dynamics of Ring Cleavage and Substitution in the Reactive Scattering of O(3P) Atoms with C2H4S and C4H4S Molecules. J Phys Chem A 1997. [DOI: 10.1021/jp962692c] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- X. Gao
- Chemistry Department, University of Manchester, Manchester M13 9PL, U.K
| | - M. P. Hall
- Chemistry Department, University of Manchester, Manchester M13 9PL, U.K
| | - D. J. Smith
- Chemistry Department, University of Manchester, Manchester M13 9PL, U.K
| | - R. Grice
- Chemistry Department, University of Manchester, Manchester M13 9PL, U.K
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Affiliation(s)
- J. J. Wang
- Chemistry Department, University of Manchester, Manchester, M13 9PL, U.K
| | - D. J. Smith
- Chemistry Department, University of Manchester, Manchester, M13 9PL, U.K
| | - R. Grice
- Chemistry Department, University of Manchester, Manchester, M13 9PL, U.K
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Affiliation(s)
- J. J. Wang
- Chemistry Department, University of Manchester, Manchester, M13 9PL, U.K
| | - D. J. Smith
- Chemistry Department, University of Manchester, Manchester, M13 9PL, U.K
| | - R. Grice
- Chemistry Department, University of Manchester, Manchester, M13 9PL, U.K
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Affiliation(s)
- J. J. Wang
- Chemistry Department, University of Manchester, Manchester M13 9PL, U.K
| | - D. J. Smith
- Chemistry Department, University of Manchester, Manchester M13 9PL, U.K
| | - R. Grice
- Chemistry Department, University of Manchester, Manchester M13 9PL, U.K
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