Performance and efficacy of a recently introduced diamond rotary instrument: Cutting, surface preparation, and cleanability

Sulaiman, Taiseer A.; Alsahafi, Tariq; Wallet, Shannon M.; Vasconcellos, Adalberto Bastos de

doi:10.1016/j.prosdent.2022.11.012

Cited by 2 publications

(2 citation statements)

References 15 publications

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“…Concerning the issue after how many uses a bur should be changed, several studies found that the cutting efficiency of diamond burs diminishes with each subsequent use, most pronouncedly following the initial use, regardless of the type of instrument [ 20 , 21 , 46 ]. The cutting efficiency is influenced by several factors, including grit size [ 20 , 46 , 47 ], coolant flow [ 33 , 48 ], load applied by the operator, bur shape, tooth structure [ 20 , 26 ], repeated cleaning and sterilization process [ 20 , 49 , 50 ], use of the electric micromotor vs. air turbine handpiece and cutting technique [ 24 , 48 ], the number and location of the coolant ports of the dental handpieces [ 24 , 48 ]. Consequently, there is no consensus on a fixed number of uses/bur.…”

Section: Discussionmentioning

confidence: 99%

Analysis of the Pulpal Blood Flow Microdynamics during Prosthetic Tooth Preparation Using Diamond Burs with Different Degrees of Wear

Ciora,

Miron,

Lungeanu

et al. 2024

Dentistry Journal

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Pulpal modifications taking place during prosthetic tooth preparation using worn-out burs may represent a risk for the vitality of the dental pulp. The aim of this in vivo study was to evaluate whether the wear of diamond burs has an influence on the vascular microdynamics at the level of the dental pulp, during vertical preparation for zirconia crowns. The study was performed with a split-mouth design and included 32 vital permanent monoradicular teeth (20 maxillary and 12 mandibular), from six subjects, aged between 20 and 50 years. The teeth were randomly assigned to two study groups of 16 teeth each. For prosthetic preparation, new burs were used in the first group, and burs at their 5th use were used in the second group. Four consecutive determinations of the pulpal blood flow by Laser Doppler flowmetry (LDF—laser Doppler MoorLab instrument VMS-LDF2, Moor Instruments Ltd., Axminster, UK) were taken for each tooth included in the study: before the preparation (control values), immediately, at 24 h, and at 7 days after the prosthetic preparation. A four-way ANOVA statistical analysis was applied to analyze the effect of four considered factors (bur wear degree, time of measurement, tooth number, and tooth location) on the pulpal blood flow (PBF). A significant increase in pulpal blood flow compared to the baseline was recorded immediately after preparation (p < 0.01), at 24 h (p < 0.01), and at 7 days (p < 0.05) in both groups, but more pronounced in the case of burs at the 5th use. The blood flow was significantly higher in upper jaw teeth, irrespective of the measurement time. In conclusion, the use of worn-out diamond burs produces lasting modifications in the pulpal blood flow of teeth that undergo prosthetic crown preparation. ISRCTN registry: ISRCTN49594720.

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Section: Discussionmentioning

confidence: 99%

Analysis of the Pulpal Blood Flow Microdynamics during Prosthetic Tooth Preparation Using Diamond Burs with Different Degrees of Wear

Ciora,

Miron,

Lungeanu

et al. 2024

Dentistry Journal

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“…Regarding the characteristics of diamond burs, cutting efficiency is one of the most important aspects to consider when selecting a diamond bur. In dentistry, the cutting efficiency of diamond burs is generally affected by several factors, including the grit size [ 20 , 26 , 27 ], the coolant flow [ 28 , 29 ], the load applied by the operator, the design, the tooth structure [ 20 , 26 ], the repeated use [ 26 , 27 ], the cleaning, and the sterilization [ 26 , 30 , 31 ], the use of the electric micromotor vs air turbine handpieces and the cutting technique [ 4 , 29 ], the number and location of the dental handpieces coolant ports [ 4 , 29 ]. Many studies have stated that the cutting efficiency decreases as the number of cuts increases, regardless of the type of burs, and the reduction is the highest after the first use [ 23 , 26 , 30 , 31 ].…”

Section: Introductionmentioning

confidence: 99%

Evaluation of the Pulp Chamber Temperature during Tooth Veneer Preparation Using Burs with Different Degrees of Wear—A Preliminary In Vitro Study

et al. 2023

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The heat produced during tooth preparation could be a source of damage for dental pulp, and many variables are involved in this process. The aim of this in vitro study was to evaluate whether the different degrees of wear of the diamond burs significantly influenced the temperature changes in the pulp chamber during tangential veneer preparation. The sample comprised 30 intact permanent monoradicular teeth, randomly assigned to three study groups of 10 teeth each, of which 5 had the pulp tissue preserved and 5 had thermoconductive paste in the pulp chamber. For prosthetic preparation, we used new burs in the first group, burs at their fifth use in the second group, and burs at their eighth use for the third group. The pulp chamber temperature was evaluated at the start, after one minute, and after three minutes of preparation, using a k-type thermocouple. The results of the three-way ANOVA and Tukey post hoc comparisons showed a highly significant effect of the time of measurement, while the pulp condition and the degree of wear of the burs had no effect. In conclusion, the different degrees of wear of conventional diamond burs do not produce statistically significant different changes in the pulp chamber temperature.

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Performance and efficacy of a recently introduced diamond rotary instrument: Cutting, surface preparation, and cleanability

Cited by 2 publications

References 15 publications

Analysis of the Pulpal Blood Flow Microdynamics during Prosthetic Tooth Preparation Using Diamond Burs with Different Degrees of Wear

Analysis of the Pulpal Blood Flow Microdynamics during Prosthetic Tooth Preparation Using Diamond Burs with Different Degrees of Wear

Evaluation of the Pulp Chamber Temperature during Tooth Veneer Preparation Using Burs with Different Degrees of Wear—A Preliminary In Vitro Study

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