1. The Plaintiff (Counterclaim Defendant) from May 7, 2013 to October 17, 2016 between the Plaintiff (Counterclaim Defendant) and the Defendant (Counterclaim Plaintiff).

A principal lawsuit and a counterclaim shall be deemed simultaneously.

1. Basic facts

A. The Plaintiff is a doctor who operates the Seocho-gu Seoul Metropolitan Government 2nd floor D dental clinic (hereinafter “Plaintiff hospital”), and the Defendant is a patient who has received dental treatment from the Plaintiff.

B. From May 7, 2013, the Defendant visited the Plaintiff’s hospital and consulted about the correction of dental services. On August 23, 2013, the Plaintiff received diagnosis from the Plaintiff’s hospital with class 3 irregular concurrence, and began the correction of dental services by attaching the correction device to the baby from the 28th day of the same month.

C. On January 23, 2014, the Plaintiff: (a) laid down the first place of the Defendant’s right and right and right; (b) laid down the first place of the Defendant’s right and right and right and the first place of the right and right on February 17, 2014; and (c) subsequently closed the storage space.

Around March 11, 2015, the Plaintiff listened to the horses that an infant enters into the Republic of Korea too much from the Defendant, and opened a screen on the Defendant’s upper and lower music, thereby moving an infant to the front bank.

E. On June 15, 2015, the Plaintiff: (a) laid the screen on the Defendant’s upper left right and right right side; (b) the Plaintiff laid the screen on the Defendant’s upper left side; and (c) the Defendant immediately complained of heavy pain.

On June 23, 2015, the Plaintiff confirmed the pain and change on the left-hand side of the Defendant's bad faith, and removed the screen that was planted on the left-hand side of the same day.

F. On July 29, 2015, the Plaintiff re- standing the scrap on the left-hand side of the Defendant’s bad faith, and removed the scrap on July 15, 2016.

G. Around October 2016, the Defendant discontinued the treatment at the Plaintiff hospital, and around that time, the Defendant started the treatment at the F dental clinic located in the fifth floor of the Gangnam-gu Seoul E building.

H. On March 18, 2017, the Defendant issued a statement of opinion that the Defendant’s sacrificing of the Defendant’s sacrificing of the sacrine excessively, and that the sacrificing of the sacrine seems to be a non-dynamic water control infection by reactioning the sacrificing of the sacratic to the sacrine and the cold temperature test.

(i) physical appraisal;