Irvine-based Biolase Inc. said today that Jeffrey Nugent is now the company’s permanent chief executive. Nugent, a Biolase director, had served as acting chief executive since June.

Biolase makes lasers for dental and other medical uses.

Nugent, who was previously president and chief executive of Ascension Orthopedics Inc., replaces Federico Pignatelli, who resigned as Biolase’s chief executive in June and later left the company’s board.

Shares of Biolase closed up 2% to a market value of $97 million.