- Best Teacher Award Institutional: SRM University, Chennai, India 2006
- Best Teacher Award Institutional: SRM University, Chennai, India 2007
- Resource Faculty – National Centre for Nano-Science and Nano Technology (NCNSNT), Madras University 2016
- “Prof JG KANNAPAN” Best Research Article Award– Indian Society for Dental Research– 2016
- “Good Samaritan Award”- State Award: CEAT – Conservative Dentistry and Endodontics Association of Tamil Nadu 2017
- Academic Excellence Award– IACDE (Indian Association of Conservative Dentistry and Endodontics), at 32nd IACDE and 25thIES National Conference, Ahmedabad, India 2017
- Dhronacharya Award -CEAT – Conservative Dentistry and Endodontics Association of Tamil Nadu 2018
- Research Travel Award – IADR Cariology Group -International Association for Dental Research, Cariology group 2019
- Teaching Excellence Award 2022– Woman Icon Awards – Saveetha Dental College & Hospitals 2022
- Prof DR. S. MAHALAXMI – Best Research Award– International Endodontic Society
- Prof DR. S. MAHALAXMI and DR. S. VIDHYA were announced as Winners in the In-Vitro Study/Laboratory Studies Category for their research topic titled, “Histological Evaluation of the Dentin Bridge Formation by Pachymic Acid and Biodentine in Human Tooth Culture Model” published in the year 2022 in the journal ‘Endodontology’, the official publication of the Indian Endodontic Society which was awarded on 30 th September 2023 at IESCON 2023, held at Bhubaneshwar, Odisha.”Winner of Invitro research category 2022
- Prof DR. S. MAHALAXMI was awarded a certificate of appreciation for her outstanding contribution as a MODERATOR during the IES-CARES (Clinical, Academic & Research in Endodontic Online Series) Webinar
- Dr. Mahalaxmi – Silver Medal for paper presentation– Research Day SRM Institute of Science & Technology
- Dr. Mahalaxmi. S- Special Award– Publication in high impact factor journal as author
- Prof. DR. S. MAHALAXMI has been honored with a Special Certificate of Appreciation by WILEY for her paper titled, “Eggshell derived nano-hydroxyapatite incorporated carboxymethyl chitosan scaffold for dentine regeneration: A laboratory investigation” which has been recognized as a top cited paper published in International Endodontic Journal (IF-5.0) during the period January 2022-December 2023.