62 A.2d 843 Bierstein, Appellant, v. Whitman. Supreme Court of Pennsylvania.November 10, 1948. Reargued November 16, 1948. January 3, 1949. Negligence — Dentists — Malpractice — Extraction of tooth — Evidence — Necessity of expert testimony. 1. Expert testimony is necessary to establish negligent practice in any profession. [541] 2. In an action in trespass […]
