Dr. Nicholas Pigneri, DDS. Houston Dentists at Post Oak - Enjoy Going to the Dentist! At Houston Dentists at Post Oak, enjoy state-of-the-art dental care in a comfortable and relaxing setting. We offer leading general and surgical dental services, and onsite periodontal care helping patients gain the smile they’ve always wanted. Our office is designed around you. From examinations and cleanings to advanced dental treatment, enjoy your visit from start to finish. From preventative care to advanced smile restoration, all our services are located under one roof. Enjoy a relaxing environment, optional sedation, and professional care in the Houston Galleria area.