May 5--Endodontist Brian Hall is back in business today, a little more than 48 hours after a Ford F-450 pickup truck plowed through his office at 1090 W. Patrick St.

Hall and his staff rescheduled Monday's appointments. He will see patients today in his brother's general dentistry office, William J. Hall DDS, in the same building.

"I'm still in business," Brian Hall said. His patients "were very understanding.

"We are keeping a positive attitude."

Several rooms, including the waiting room, were damaged when the truck hit the building about 11:45 p.m. Saturday. The driver was identified as Timothy P. Davis, 44, of Frederick , according to the Frederick Police Department.

Officer First Class Matthew Irons was on patrol, turning onto Hillcrest Drive from U.S. 40, when he saw the truck leave a nearby parking lot, police said. The truck swerved in a large circle, into the parking lot at 1090 W. Patrick St., plowed through the office and ended up stopping facing the wrong way in the drive-through lane of Taco Bell.

Davis was highly intoxicated, police said. He was taken to the Frederick Memorial Hospital emergency room and was then transferred to Washington County Hospital in Hagerstown for evaluation, police said.

He was listed in good condition Monday morning at the trauma center, according to a hospital official.

Police plan to charge Davis when he is released from the hospital.

The hospital did not know when Davis would be released.

Hall got the call around 12:30 a.m. Sunday to come to his office.

"I'm kind of still numb to this whole thing," he said Sunday afternoon. "My operation area is pretty much shot."

Hall performs root canals and many instruments were destroyed.

A $17,000 microscope he used to look at patients' teeth was destroyed. Two of his patient chairs, estimated cost about $6,000 each, were ruined.

Water lines run to the chairs to provide drinking water, so the pipes burst when the chairs were ripped out in the crash. Water covered the floor and the carpet had to be ripped up to prevent mold. A temporary wall was put up and a dehumidifier brought in to help remove the dampness.

Hall and his wife had decorated the waiting room with personal items, including pictures of their daughters and Polish pottery.

"It was like sitting in a living room," he said. "It was all stuff that was a little bit of me. Now it's all gone."

He did not have an estimate for building damage but he thinks damage to each operating room is at least $50,000.

Hall does not know when his office will reopen.

"I'm here to treat patients and make their toothache feel better," he said. "It's a set back, but I can't let it get me down too much."