Following the CO amended 2021 IBC
Table 506.2 lists maximum allowable area for a non-sprinkled Type V-B as 9,000sf. If you can get a frontage increase, you may be ok; see Section 506.3.
Following Steveray, does this dentist use gas or any other treatment that knocks people out? If so, and there is the possibility of 4 or more patients incapable of self preservation (i.e. drugged or knocked out), then you will need to follow Section 422 (Ambulatory Care Facilities) and Section 903.2.2 (provided below).
[F] 903.2.2 Ambulatory Care Facilities
An automatic sprinkler system shall be installed throughout the entire floor containing an ambulatory care facility where either of the following conditions exist at any time:
- Four or more care recipients are incapable of self-preservation.
- One or more care recipients that are incapable of self-preservation are located at other than the level of exit discharge serving such a facility.
In buildings where ambulatory care is provided on levels other than the level of exit discharge, an automatic sprinkler system shall be installed throughout the entire floor as well as all floors below where such care is provided, and all floors between the level of ambulatory care and the nearest level of exit discharge, the level of exit discharge, and all floors below the level of exit discharge.
Exception: Floors classified as an open parking garage are not required to be sprinklered.