Peeso reamers

Manufactured by Dentsply

Sourced in Switzerland, United States, Brazil

Peeso reamers are a type of dental instrument used in endodontic procedures. They are designed to enlarge and shape the root canal before filling. Peeso reamers feature a series of flutes along the length of the instrument, which allows for efficient removal of dentin tissue during canal preparation.

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Lab products found in correlation

Cavit, by 3M (1 mentions) Ah plus sealer, by Dentsply (1 mentions) Espe relyx u200, by 3M (1 mentions) Protaper rotary instruments, by Dentsply (1 mentions) Sodium hypochlorite naocl, by Merck Group (1 mentions) Naocl, by Dentsply (1 mentions) Paper points, by Dentsply (1 mentions) Low speed diamond saw, by Buehler (1 mentions)

5 protocols using peeso reamers

Standardized Root Canal Preparation

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One hundred and twenty teeth were decoronated below the cementoenamel junction perpendicularly to the longitudinal axis by using a slow-speed, water-cooled diamond saw at low rotation to get a uniform length of 16 mm from the apical end for each root. The apices of the teeth were sealed with Cavit (3M, ESPE).
All root canals were instrumented up to 60K file size (Sybron Endo). Irrigation was done using sodium hypochlorite (Parcan, Septodont healthcare) and normal saline to remove the remaining debris, dried with paper points, and filled with gutta-percha by lateral condensation and AH Plus sealer (DENTSPLY). The specimens were kept at 37°C and relative humidity for 7 days for setting of full cement. Then, the roots were embedded in acrylic resin. The post spaces were prepared using Peeso reamers (DENTSPLY) no 3 leaving 5 mm of gutta-percha in the apex.

Pradhan P.K., Dipallini S., Sahoo K.C., Patri G, & Lata S. (2020). Effect of temperature and activation techniques of irrigating solutions on push-out bond strength of fiber post. Journal of Conservative Dentistry : JCD, 23(3), 295-298.

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Standardized Fiber Post Placement Protocol

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Group 6: A standardized fiber post system (3M ESPE RelyX; 3M, Saint Paul, MN, USA) was used. Dowel spaces were prepared with #1, #2, and #3 Peeso reamers (Dentsply Maillefer) and the corresponding drill (3M ESPE RelyX; 3M) leaving 5mm of gutta-percha in the apical third. The canals were then dried with paper points and the composite resin cement (3M ESPE RelyX U200; 3M) was injected into the canal. The fiber post was inserted into the root canal using finger pressure for 10 s, and excess material was removed. Access cavities and cervical cavities were filled with SE-bond and AP-X according to the manufacturer's instructions.
To simulate the periodontal ligament and alveolar bone, the root of each tooth was covered with a 0.2-mm layer of light body silicone impression material (Perfit; Hugedental) and then mounted in an auto-polymerizing acrylic resin (Shanghai Medical Instruments Co., Ltd, Shanghai, China) block up to 2mm below the CEJ before the fracture test.

Guo Y.B., Bai W, & Liang Y.H. (2021). Fracture resistance of endodontically treated teeth with cervical defects using different restorative treatments. Journal of Dental Sciences, 17(2), 842-847.

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Instrumentation of Immature Apices

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Teeth were sectioned apically 12 mm below and coronally 2 mm above the cementoenamel junction using a diamond disk. Remnant pulpal soft tissue was removed using a size 30 Hedström file (Dentsply Maillefer, Ballaigues, Switzerland) [Figure 1]. Working length was determined radiographically using size 20 K-files (Dentsply Maillefer, Ballaigues, Switzerland) and was kept 2 mm more than normal to over-instrument the canals simulating immature open apices. Rotary instrumentation was carried out using ProTaper rotary instruments (Dentsply Maillefer, Ballaigues, Switzerland) to standardize to master apical size 30 corresponding to F-3. Next Peeso reamers (Dentsply Maillefer, Ballaigues, Switzerland) were used sequentially from #1 to #5 to obtain larger canal space and foramen. The canals were irrigated with 2 mL 2.5% sodium hypochlorite (NaOCl) (Sigma-Aldrich, St. Louis, MO) between the instrument changes. A final flush was applied using 5 mL 17% ethylenediaminetetraacetic acid (EDTA) (Sigma-Aldrich, St. Louis, MO) for 1 min and 5 mL 2.5% NaOCl for 1 min and then dried using paper points (Dentsply Maillefer, Ballaigues, Switzerland)

Patil U., Yeli M., Tapashetti S., Naik B, & Tilakchand M. (2019). Effect of varying durations of intracanal medicament application used in regenerative endodontic treatment on the push-out bond strength of a novel cement: NeoMTA Plus. Journal of Conservative Dentistry : JCD, 22(1), 48-53.

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Standardized Root Canal Preparation

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Intact, single, straight, and conical-rooted human teeth (
n= 144) were selected for this study according to local university institutional review board (IRB) guidelines (IRB 1408889870). The teeth were saved for a maximum of 6 months after extraction at 4°C in 0.1% thymol solution until used. Samples were horizontally decoronated 0.5 mm apical to the facial/buccal cementoenamel junction using a water-cooled low-speed diamond saw (Buehler Ltd.; Lake Bluff, IL, USA Illinois, United States). Furthermore, the apical 3 mm of each root were removed, resulting in 8 ± 1 mm root sections. The internal diameter of the roots was standardized by mechanical preparation with Peeso reamers (Dentsply; Johnson City, Tennessee, United States) (size 1–5) to a final diameter of 1.5 mm. After the use of each size of Peeso reamer, root canals were irrigated with 2 mL of 1.5% sodium hypochlorite (NaOCl) for 1 minute using a 27-gauge needle. After instrumentation was completed, each canal received a final rinse with 5 mL of 1.5% NaOCl for 2 minutes, 5 mL of 17% ethylenediaminetetraacetic acid (EDTA) (Vista; Racine, Tennessee, United States) for 2 minutes and 5 mL of sterile water for 2 minutes.

Yaghmoor R.B., Platt J.A., Spolnik K.J., Chu T.M, & Yassen G.H. (2020). Effect of Hydrogel-Based Antibiotic Intracanal Medicaments on Push-Out Bond Strength. European Journal of Dentistry, 14(4), 575-583.

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Simulating Crown Fractures in Immature Teeth

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To simulate complicated crown fractures in immature teeth, the samples were sectioned 8 mm above and 12 mm below the cemento-enamel junction (CEJ) while under a water-cooled diamond disc [8 (link)]. The root canals were instrumented with Peeso reamers (size 1–5, Dentsply Maillefer) followed by a 3017 HL diamond bur (KG Sorensen, Barueri, SP, Brazil) to create a standard open apex with a diameter of approximately 2.5 mm [15 (link)]. Next, the root canals were rinsed with 20 mL of 2.5% sodium hypochlorite followed by final irrigation with 3 mL of 17% ethylenediaminetetraacetic acid (EDTA) solution and 5 mL of distilled water [8 (link)]. The samples were re-evaluated for the presence of cracks or defects using the transillumination method. All teeth with cracks were excluded from this study.

de Souza G.L., Freitas G.A., Ribeiro M.T., Lemus N.X., Soares C.J, & Moura C.C. (2023). Effects of different calcium-silicate based materials on fracture resistance of immature permanent teeth with replacement root resorption and osteoclastogenesis. Restorative Dentistry & Endodontics, 48(2), e21.

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