# Enlarge
When viewed with the naked eye, it can only be seen as a horizontal line, but when enlarged, it can be seen that it is a list of letters of NIPPON GINKO. It is not possible with the naked eye, but if you zoom in (about 20 times), you can accurately show the letter G.
What you can't see can't be dealt with.
Sometimes the cause can be found out that the symptoms do not improve even after taking time.
You can find cavities that you can't see with the naked eye, you can reliably remove what is caught in the roots, tartar can be removed without touching the gums, you can notice exposed nerves, and cracks in the roots are hard to see. The amount of information that can be obtained from the magnified field of view under a microscope is enormous.
Light a dark tunnel
At our hospital, we always give a video explanation after surgery for treatment under a microscope. Many people are impressed and interested in it, but it is also true that some people do not understand it easily. My goal is to explain, understand, and agree, but I think it can't be helped because it is impossible to ask for 100%. However, looking at a microscope in dental treatment is what is important, what is true, who is it for, etc .... Through dentistry, even my life I feel that it is possible to face each other sincerely.
The left is the state where the cement remains when the crown is attached between the teeth. Nowadays, this type of cement is widely used, but if the remaining cement is not removed properly, periodontal disease will occur.
In the center, it seems that the remaining cement is being removed, but the thickness of the instrument such as a needle is about 0.1 mm.
The right is after removing the residual cement. The gingiva where the hard cement was contained is pressed and turned red.
Removal of breaking equipment
Left figure: Micrograph of a fracture device (maxillary first molar mesial buccal root canal center to apex) found in the root canal
Center view: Inside the root canal with the instrument removed
Right figure: Removed instrument length 2.5 mm
Discovery of root canal opening
Root canal treatment, called root canal treatment, is a very difficult treatment. In the case shown above, the entrance was completely closed, but it can be discovered as a clue. Even if there is a tunnel, it is the same as if the entrance is blocked by debris and you cannot see it, but there are some clues. Even if you find an entrance, you will not reach the correct exit unless you remove the one that is exactly clogged up to the correct exit. The root canal tunnel is tapered and curved, so it is not an easy treatment.
Mechanical cleaning and cleaning of the root canal, application of disinfectant, and secure sealing of the apex
Abutment tooth formation
The black thing that can be seen between the teeth and gums is a special thread called expulsion thread. There is a groove called a gingival sulcus at the boundary between the tooth and the gingiva, so a gingival sulcus with an appropriate thickness is placed there and the tooth is shaved.
Gingival Exclusion-Impression Acquisition-Impression Confirmation
This is the so-called patterning.
Some dentists say that gingival retraction is a maniac method, but it's ridiculous and is still an indispensable step as a pretreatment for molding.
Confirmation of conformity of prosthesis-removal of excess cement
Extraction and scraping of residual roots and ignorant parents
The information obtained through the microscope is very meaningful to both patients and us, even for fully horizontal impacted mandibular teeth, semi-impacted wisdom teeth, and wisdom teeth lower than the occlusal plane of the maxilla. In addition, it is an indispensable device for scraping granulation tissue in the extraction socket after tooth extraction, not limited to wisdom teeth.