Also got trapped in the dentist's chair room. Not too pleased with the solution, especially since you don't make it very clear that it isn't a bug. Perhaps inform the player that the door closed behind them?
The games you make are becoming too much of a pixel hunt. The puzzles in this one were bog easy, but I had to do the 'scan the room with your mouse to find something of interest' way too many times. This is especially offputting when you've got the little purple dots everywhere, which trigger your mouse, but you don't necessarily have the jar to collect them yet. This made the dentist's chair room particularly grating, as I had to find the screwdriver while being triggered by 4 or 5 purple dots.
I appreciate that you use photographs of real places, and its nice that stuff that is actually in the room and not photographically added is relevant. But in one room, a cupboard and a drain were both 'real' and right next to each other, which meant searching the room allowed you to think you, say, were just hovering over the cupboard when you were actually over the drain. And clicking over every 'real' thing is a next to impossible task, considering how much stuff is in there! The places are a huge mess.