Background: Poly lactic acid (PLA) is environmentally friendly and biocompatible and thus it has great potential for use in dentistry. Its uses span from tissue engineering to orthodontics, covering both therapeutic requirements and environmental issues. Aim: This scoping review aims to comprehensively explore PLA's dental applications, examining its advantages, limitations, and prospects. Methodology: Using a systematic search across numerous databases, including PubMed, Google Scholar, and Web of Science, we were able to present a thorough review. The initial search from the electronic databases produced a total of about 30 articles. There were about 28 unique items left after duplicates were eliminated. Following a proper screening and thorough review, about 18 papers were determined to be admissible because they specifically addressed PLA's biological uses in dentistry. Results: PLA has a lot of potential for dentistry because it can be used as a scaffold material, facilitate directed tissue regeneration, and offer long-lasting orthodontic options. Controlled release is provided by PLA-based drug delivery devices for better periodontal disease treatment. But it is critical to handle production costs and mechanical constraints. Conclusion: PLA is proving to be a game-changing material for dentistry, supporting the global movement toward sustainable healthcare solutions. It is a noteworthy option because to its biodegradability, biocompatibility, and adaptability. To fully realize its potential and pave the path for sustainable dental healthcare, however, optimizing mechanical properties and production costs remain major obstacles.