Exhibit 3.1

FIFTH AMENDMENT

TO

RESTATED CERTIFICATE OF INCORPORATION

OF

BIOLASE, INC.

BIOLASE, Inc. (the “Corporation”), a corporation organized and existing under and by virtue of the General Corporation Law of the State of Delaware, hereby certifies as follows:

1. This Certificate of Amendment amends the provisions of the Corporation’s Restated Certificate of Incorporation, as amended and filed with the Secretary of State of the State of Delaware (the “Restated Certificate of Incorporation”).

2. Article III of the Restated Certificate of Incorporation is hereby amended and restated in its entirety as follows:

THIRD. The total number of shares of stock which the Corporation shall have the authority to issue is ONE HUNDRED EIGHTY ONE MILLION (181,000,000) shares of which stock ONE HUNDRED EIGHTY MILLION (180,000,000) shares of $.001 par value shall be common stock and of which ONE MILLION (1,000,000) shares of $.001 par value shall be preferred stock.

3. The foregoing amendment was duly adopted in accordance with the provisions of Section 242 of the General Corporation Law of the State of Delaware.

4. All other provisions of the Restated Certificate of Incorporation shall remain in full force and effect.

IN WITNESS WHEREOF, the Corporation has caused this Certificate of Amendment to be signed this 28th day of May 2020.

BIOLASE, INC.
By:	/s/ Michael C. Carroll
Name:	Michael C. Carroll
Title:	Secretary