The main indicators that determine the performance of dental mobile phones are as follows:
1. The lifespan of mobile phones
Mainly depends on: correct cleaning and maintenance; Bearing materials and manufacturing processes; Material and production of internal pipelines for mobile phones. Bearings are precision components of turbine phones, and clinical doctors know that they are vulnerable parts. Improper cleaning and maintenance methods can easily lead to phone damage.
Traditional mobile phone bearings are mostly made of steel, and the general movement is composed of an outer ring, an inner ring, a retainer, and a ball. Ceramic ball bearings are now commonly used. Ceramic ball bearings have the following advantages:
(1) The hardness of high hardness ceramic materials is 20% higher than that of stainless steel materials.
(2) The weight of lightweight ceramic materials is about 1/2 lighter than that of stainless steel. Reduced friction between the bearing contact surface and the needle cylinder.
(3) Durability, more resistant to high-temperature and high-pressure sterilization treatment than steel ball bearings.
High quality ceramic bearings should have lower noise and longer service life. Of course, the quality of ceramic bearings in the current market is also uneven, and not all ceramic bearings are better than steel balls. There is no need to blindly follow this rule, but more attention should be paid to the technical indicators and practical experience brought by mobile phones to clinical doctors, such as cutting force, noise, and service life.
2. Cutting force of mobile phones
The cutting force of a mobile phone is closely related to its power, and factors related to it include the torque, air pressure, and the selection and usage habits of the needle.
3. The cooling effect of mobile phones
The commonly used cooling method for mobile phones is single hole spray, and the most ideal method now is 4-hole spray, and the design of the spray holes for mobile phones is also very particular. The best effect is that the water mist can evenly cover the entire needle until it reaches the top.
4. Gripping sensation
A good dental phone has a plasma coated material and a threaded anti slip design on its surface, providing a comfortable feel and preventing slipping. The weight of a mobile phone is not necessarily the lighter the better, but rather the evenly distributed weight between the phone and the pipeline, as well as whether the position of the gravity balance point is appropriate.
5. The safety and stability of treatment
It depends on the clamping force of the internal clamping system of the phone head and the air pressure inside the phone. The international standard clamping force is 22N. A good mobile phone needs to be higher than this international standard to ensure long-term safety.
6. Convenience of preparing posterior teeth
The preparation of posterior teeth is difficult for dentists to operate, and a good mobile phone has a reasonable design of the head and body angle, which is very convenient for tooth preparation operations in the posterior tooth area. Especially for patients with limited mouth opening, it is more suitable. The perfect angle design provides free movement space for the phone head in the posterior tooth area, making patients feel even more comfortable.
7. Noise control of mobile phones
The noise of mobile phones can increase patients' fear of dental treatment. Generally, the pressure caused by noise and its long-term effects can harm human health, especially during concentrated work hours. Therefore, excessive noise from high dental mobile phones can also be harmful to the health of dentists. Choosing a low-noise mobile phone is a good thing for both patients and doctors.
8. Control of cross infection
The main influencing factors include: material selection and external coating of mobile phones, anti suction design of the head, whether it can withstand 135 degree sterilization, and whether it has a built-in filter screen. The surface treatment of mobile phones must be coated, withstand high temperature sterilization without rusting, not easily contaminated with dirt, and easy to clean and disinfect. In the early days of mobile phones, there was no device to prevent suction, and negative pressure was generated when the phone stopped running
Pollution is caused through the following two pathways:
(1) Through the exhaust pipe circuit: When the gas supply is stopped, the inertia rotation of the needle generates a pressure difference, causing foreign objects in the mouth to enter the exhaust pipe through the machine head. Forming cross infection sources.
(2) Foreign objects (blood, saliva, debris, dirt, etc.)
Through the water supply pipeline circuit: When spraying is stopped, to prevent dripping, general comprehensive treatment tables are equipped with a water supply device for suction during shutdown. At this time, foreign objects in the oral cavity are sucked back into the water supply pipe of the mobile phone and invade the 10cm~20cm area inside the wire pipe connecting the comprehensive treatment table, forming a cross infection source.
After entering the interior with air and water, blood, saliva, and debris are distributed to the ball bearings and other areas, becoming important vectors of cross infection. Therefore, it is mandatory for the state to stipulate that the use of dental mobile phones must be "one person (patient), one machine", that is, after each patient uses them, they must be sent for cleaning, disinfection, and packaging before they can be used again.
At present, it is advocated to use "hygiene phones" with anti suction devices, which are equipped with check valves inside. It is a valve that controls the direction of water flow, built-in in the interface, which can prevent dirt sucked back from the phone's water supply pipe from entering the inside of the wire, prevent foreign objects from entering the mechanical sealing structure, discharge foreign objects from the gap of the machine head to the outside, and prevent cross infection between patients, surgeons, and staff. Extend the service life of the shaft core and reduce operating costs. Protect the patient's body and mind from the impact of cross infection and their concerns, and receive treatment with peace of mind.
9. The Perfection of Mobile Phone Operations
Nowadays, mobile phones are becoming more and more diverse in functionality. Some phones come with fiber optic systems, and when in use, there are lights that directly illuminate the operating area, bringing great convenience to doctors. The perfect brightness of the mobile phone fiber optic should be as close to natural light as possible. For convenience, it should also have a quick connect interface and a button type machine head, which makes the disassembly and assembly of the car needle very fast and can also reduce pollution.
10. Reasonableness of price
The prices of dental mobile phones in the dental market vary greatly, and it is necessary to fully consider important factors such as the service life of different phones, investment in bearing replacement, service life after bearing replacement, and the impact on the efficiency of doctors based on one's own situation, rather than blindly pursuing the purchase of low-priced low-end mobile phones.