Dr. Hayashi is a wonderful dentist. I recommend her to all my friends who are looking for a dentist on Oahu. She is thorough and detail-oriented, she takes time to genuinely find out about you and your life, and she is kind and generous!
Six months ago, I invested in a mouthguard to protect my teeth from grinding while I sleep (this is a big investment). Unfortunately, I ground through my mouthguard and cracked it in only 6 months. Dr. Hayashi generously offered to make me a brand new one to replace it and gave it to me free of charge!!! She also allowed me to pay her in installments when I had a cavity filled that was not covered by insurance. I would recommend Dr. Hayashi to everyone--she'll take care of your teeth and make you walk out with a smile.
(BTW: Dr. Oogle won't let me rate her as 4 stars for both extremely cheap and like a health spa, even though it is very comfortable and clean, and the cost was extremely cheap--Free! so I had to rate the facilities as 3 stars, even though I wanted to put 4.)