"Loosen your belt, maybe." She suggested. I did.
The cavity was on the lower right side of my mouth, in the back, a difficult place to get-at. She did the shot, inserting the pain-killer slowly. After waiting a few minutes for the shot to take-effect, she began to drill on my tooth. Despite the high-pitched whine of the drill, I was able to focus my mind on more-pleasant things, ultimately finding myself counting the freckles on Sarah's chest and focusing on a little mole at the point where her left breast began to rise. I intently looked at the form of the little dark spot and memorized every bit of her exposed flesh. Somehow, another button had come undone on her blouse and the view got even better. I wasn't paying any attention to what she was doing inside my mouth with the drill. I did sort-of notice that she would lay her dental instruments on my lower stomach, just above my pelvis.
She was having trouble getting at the tooth in the back of my mouth. She said, "If you don't mind, I'd like to get in a better position to work on that tooth."
I didn't know what she meant; I just hoped the new position would give me a better view down her blouse. She totally surprised me when she climbed onto the chair and straddled my hips. Her pelvis was resting on mine. I could've sworn she was moving herself over my prick as she adjusted her position. I could sense the warmth in her pelvis. Then, she was leaning into me, working the drill on the tooth while I had an even better look down her blouse.
"Icch!" She said. I asked what was the matter and she said, "My bra is pinching my shoulder. Scratch my shoulder, please."
I tried to find the right spot, scratching the back of her shoulder through her blouse. It wasn't helping. It was easy for me to reach into her shirt and scratch her bare shoulder under the bra strap. Her blouse gaped open more and the strap slid down her shoulder onto her arm. Her succulent breasts were moving around in her bra, inches from my face. The bra strap on her arm restricted her movements.
"Just unhook the damn things." She said while she worked in my mouth.
This was already the best visit-to-the-dentist in my life and it was about to get better. I reached around her back and unhooked her bra through her shirt. She leaned back and pulled the frilly white garment off one arm, then the other. She undid another button on her blouse, reached in, pulled her bra free and dropped it to the side. She was sitting on my pelvis. I was sure she felt the hardness of my dick against her crotch.
Now I had an amazing view down her shirt. I could see the entirety of her breasts. She had soft, smooth skin and dark pink nipples. Her breasts swayed and jiggled as she drilled the cavity in my mouth. When she reached up to get something from one of the little dental tables, her chest was right-over my face and her shirt rubbed against my face. Her tits were dangling right in front of me, truly amazing.
I couldn't talk with the gear in my mouth, so I just mumbled. For a moment, her blouse parted and my face was an inch from the bare skin at the top of her breasts. She resumed the drilling, saying she "just-about had everything". When she leaned back to take a break, I saw her stiff nipples poking against her thin blouse, with the bare skin between her beauties exposed. This was amazing. I just laid there and let her continue her craft.
She finished the drilling, dismounted and went to prepare the filling material for my tooth. I sat there, trying to regain my composure. After a few minutes, Sarah came back with an array of gadgets to insert the material and then hold it in place while it hardened. I was already hardened. My dick was making an obvious tent in my pants.
Sarah took a few minutes to arrange her instruments. She asked if I was any-more-relaxed and I said that I was.
Then, she noticed the bulge in my pants. She said, "Let's see if we can relax you more so you're not all tense and nervous."
I was tense in a different-way than she was referring to, but I wasn't objecting to anything she was doing. So, when she undid my belt, saying it had been too tight, then undid the button on my trousers, I didn't say a thing. I heard my zipper being pulled down and felt Sarah's hand pulling my cock free of my pants.
"Ooh, look at this. You are a big boy. Your wife said you have a nice one."
She was holding my dick in her hands. She continued by pulling my pants and underwear down my legs to my ankles. I was essentially naked from the waist down, reclined in the dentist chair. My dick was standing straight-up.
Sarah, climbed aboard the chair again. Another surprise, I felt her naked flesh against my thighs. She had removed her pants and underwear and was straddling my pelvis. I felt her soft warm skin against my body. Then she rubbed her pussy-hair over my erect penis and pressed her pussy against it.
She said, "Sometimes, we dentists get tired of filling other people's cavities all day and need someone to fill one of our cavities."
She reached down and positioned my prick so it slid into her wet vagina. She groaned and I did the best I could to groan, with my mouth full of cotton. Her hot pussy wrapped tightly around my prick. She was incredibly warm down there and she seemed to be doing things with her vagina to stimulate my cock. This was amazing. I wasn't concerned at all about any pain from my tooth.
Sarah leaned forward over me. Her blouse was almost completely undone. It was untucked with only one small button remaining. I reached down and undid that final button. Her tits were now uncovered and hovered just a few inches away. I watched her tits sway and felt the warmth of her pussy as she began to insert the material into the cavity in my tooth. She would work on the tooth for a bit, then stop and move her pelvis, fucking herself on my prick. I reached up and grabbed her precious breasts, holding them in my hands and fingering her nipples. Her tits were simply fantastic.
She said, "At dental school, they said it was important to have patients relax. I'm trying some new techniques. How am I doing?"
I mumbled through all the stuff in my mouth, "Wonderful."
She appreciated the comment and squeezed my cock with her inner muscles. She closed her eyes and rocked back-and-forth on my dick.
"It will take a while for the amalgam in your tooth to harden. Can you stay hardened while we wait."
I eagerly mumbled "Yes, I'll try." She removed all the gadgets except for some cotton.
She laughed and said, "Happy birthday."
She closed her eyes and rocked on my cock for a few minutes. I wondered how she knew it was my birthday; had she found it in my record or had my wife told her?
She said, "Has your wife told you about the things we used-to-do together?"
I mumbled "Un-uh". My bride had told me she was friends with Sarah, but nothing more. I was left wondering what Sarah had meant.
I was surprised that the dental-chair could accommodate the weight of both of us, but those things are strong enough to support some huge people. But then, I was further amazed when Sarah began to shift around. Somehow, after dismounting my prick, she lowered the chair so my head was below my feet. Then she turned herself around and was facing away from me with her pussy resting on my chest. I watched her slowly move her pelvis up higher to where she had her pussy over my head. Her legs straddled the chair pressed against my head. She seemed to be a contortionist with her maneuvers.
She said, "This will ease the pain a little."