How do Electronic Apex Locators Work?

Good teeth are always in style. Your teeth just sparkle with a perfect smile. And this smile looks good in you. So, you need to take care of it, then it takes of yourself. Your new life begins with a perfect confident smile.

But we don’t care about our teeth. We just keep them in bad condition. No care for teeth leads to major Dental problems.

Endodontics

It is a severe toothache that can take over your life. Highly trained endodontists called dental specialists repair tissues inside the tooth in complex ways. They diagnose and treat complicated causes of tooth pain, such as tooth abscess (infection). Endodontists perform root canal treatments to relieve pain. They work to save your natural and clear tooth.

What is a tooth pulp?

Tooth “pulp” is collectively called the nerves, blood vessels, and other tissues deep inside each tooth. When you look in the mirror, the part of your teeth that you see is an outer layer known as enamel.

The pulp, or connective tissue inside teeth, plays a major role in helping children’s teeth develop as they grow.

Tooth decay is due to poor teeth or care or a cracked tooth can lead to pulpitis called an inflamed or infected tooth pulp.

Pulpitis often causes painful tooth pain. It can sometimes lead to a very serious health problem that requires urgent medical attention.

Root Canal Treatment

Endodontic retreatment surgery involves the removal of the protective crown and the filling inside so that a tooth that did not heal properly or has developed new problems can be retreated and refilled.
Treating injuries or cracks in the teeth, involve the dental pulp.
This is one of the most common procedures for treating dental pulp in moderate-to-severe cases of tooth decay.
The tooth is cleaned with infected material, and the root canal is enlarged so that it can be filled with a temporary dental filling. Once the tooth has healed, this temporary filling gets removed and replaced with a permanent filling. A crown may be placed over the tooth to protect the filled tooth from any damage.

Apex Locator – A useful Instrument

If you are thinking about changing your apex locator then this article will provide you some recommendations. It helps to decide which locator is best suited for you. The use of apex locators in endodontics is important for proper dental treatment and it is necessary to choose the most appropriate one from the wide variety of models available on the market.

Apex locators an electronic instruments used in endodontics to measure the impedance, frequency, and resistance of the surrounding material. It locates the working length of the root canal to be endodontic. Correct determination of tooth length is an important factor for the success of endodontic therapy.

How does Apex Locator work?

It is used to measure the length of the root, and to locate the apex in the root of the tooth. This is the correct way to do endodontics. It is called Conductivity measurement in dentistry.

But why is conductometry so important in endodontics?

Here are the most important factors about conductometry in endodontics:

To determines the extensions in order to insert the instruments into the root canal as well as the tooth extensions.
It Reduces pain and discomfort in the patient.

Electronic apex locators use an electrical circuit by the patient’s root canal and oral tissues to determine the location of the apical foramen. In order to set the ideal apical limit, it is important to perform conductometry. All apex locators have two electrodes, in which one connected to an endodontic instrument, the other connected to the patient’s body. A complete electrical circuit is done when the instrument is inserted into the root canal in the apical direction and touches the periodontal tissues.

Characteristics of apex locators:

Determines the length in Endodontics which is one of the most complex and important steps in the treatment.
Electronic apex locators use an electrical circuit that also determines the location of the apical foramen.
There are various types of locators with different principles by which they can determine lengths. They are grouped into Generations: 1st, 2nd, and 3rd generation.
Modern generation electronic apex locators can determine lengths with accuracies greater than 90% but have some limitations such as the need to minimize substances.
It is sometimes, carefully not to use them in patients with cardiac pacemakers or similar.

Points need to know!

The choice of the apex locator for your dental clinic is vital, as you have to take into account the characteristics of each locator in order to choose the most appropriate and suitable one.
This locator continuously provides accurate measurement results with acoustic signals for increased safety, and it shows the exact position of the file in the root canal.

The first generation

The resistance between the periodontium and the oral mucous membrane in humans The First-generation apex location devices measure the opposition to the flow of direct current or resistance. The resistance was measured between the two electrodes to determine the location within a canal. The pain was often felt with this type of apex locator. These devices gave unreliable measurements in the case of wet canals. Examples are Densitometer and Endo Radar.

The second generation

Second-generation apex locators measure the opposite flow of alternating current or impedance. This generation contains 2 types of apex locators low frequency and high-frequency apex locators. Low-frequency AL is based on the impedance between the oral mucous membrane and the depth of the gingival sulcus and closely resembles the impedance between the canal terminus and the oral mucous membrane. A High-frequency AL used an insulator to cover most of the surface of the file.

The third generation

The 3rd generation apex locator is known as the “frequency dependent” apex locator. This type was supplied by 2 different frequencies to measure the impedance in the canal. There are 2 types of the 3rd generation impedance difference type and impedance ratio type.

The fourth generation

The 4th generation apex locator measures the characteristics using more than two frequencies.

The fifth generation

This 5th generation apex locator was developed in 2003. It measures the resistance-capacitance of the circuit separately. It is supplied by a diagnostic table that includes the statistics of the values at different positions to diagnose the position of the file. These Devices employing this method experience considerable difficulties while operating in dry canals.

The sixth generation

Currently, fourth and fifth-generation devices are mostly employed. A disadvantage of the fourth-generation devices is that they need to perform partially dried canals. 5th generation performs very well in the presence of blood and exudate but they experience difficulties while operating in dry canals.

Properties

Perfect Color display
Automatic estimation
Accurate results
Expandable
Auditory signals

Conclusion

This is how this apex locator is helpful in endodontics. We get to know about different generations of electronic machines.