Novel countable root canal file

Abstract

The invention discloses a novel countable root canal file, belonging to dental medical devices. The novel countable root canal file comprises a handle, wherein the handle is provided with a counter; the upper end surface of the handle is provided with a hole, the inner side wall of the hole is provided with an annular groove, and the side wall of the annular groove is provided with a display hole;the counter comprises a character wheel sleeving the annular groove, and a pawl device arranged on a side wall of the hole, the outer side wall of the character wheel is provided with a digital sign,the upper end surface of the character wheel is fixedly connected with a ratchet wheel, the pawl device is connected with the ratchet wheel, an end surface of the character wheel is provided with a through hole, the axis of the through hole is collinear with the axis of the character wheel, a circular ring is sheathed in the through hole, the inner side wall of the circular ring is provided witha chute, a button sleeves the upper end of the hole, the button can move in the hole along the axis of the hole, the bottom of the button is connected with a connecting rod, the side wall of the connecting rod is provided with an inclined block, and the inclined block adapts to the chute. According to the novel countable root canal file, the number of uses of the root canal file can be visually read on the handle.

Description

technical field [0001] The invention belongs to dental medical instruments, in particular to a root canal file for treating molar root canals. Background technique [0002] Pulp disease and periapical disease are common diseases in the Department of Stomatology. Preserving the patient's teeth and pulp is the purpose of modern stomatology, and root canal therapy is currently the most common and effective treatment. The principle of root canal treatment is to remove most of the infected substances in the root canal through mechanical and chemical methods, and to prevent the occurrence of periapical lesions or promote the healing of periapical lesions that have occurred by filling the root canal and sealing the crown. [0003] Root canal treatment generally involves the following steps: [0004] 1. Root canal preparation: open the pulp, thoroughly clear the necrotic pulp tissue, measure the length of the root canal, and expand the root canal; [0005] 2. Root canal flushing: ...

AI Technical Summary

Problems solved by technology

[0008] Due to the high cost of instruments, repeated disinfection is required in clinical practice. According to literature records, the average service life of each nickel-titanium root canal instrument does not exceed 20 times. Clinically, nickel-titanium root canal instruments have broken during use due to fatigue.

After the instrument is broken, it remains in the root canal, and part of the root canal is blocked and cannot be cleaned, leaving a large amount of bacteria, which can easily lead to treatment failure and increase the pain of the patient

However, there is no root canal file with counting function in the prior art. The Chinese utility model whose notification number is CN205411376U discloses a root canal file frame with counting function, but the counting of the root canal file frame is not intuitive.

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