## 4 Discussion
### Non-Surgical Modalities and Various Applicabilities of HA in Dentistry  
[PERSON] et al. [26] showed consistent positive outcomes of non-surgical approaches, such as botulinum toxin and dermal fillers, in mitigating signs of facial aging. The interventions effectively reduced wrinkles and expression lines and restored facial volume while improving skin texture and tone. The authors emphasized the significance of personalized treatment planning and careful patient selection to achieve optimal results and minimize potential adverse effects. These findings underscore the importance of non-surgical methods as valuable options for mitigating facial aging, with dentists playing a crucial role in providing these treatments to patients.  
[PERSON] et al. [19] highlighted that HA possesses anti-inflammatory, antibacterial, and tissue-regenerating properties, which are valuable in dental specialties like periodontitis, endodontics, and orthodontics. The versatility of HA and its ability to promote tissue regeneration make it a valuable material for non-surgical treatments in dentistry. The positive results and properties identified in the study support the increasing demand for HA and establish it as a promising therapeutic option for dental professionals.  
[PERSON] et al. [30] conducted a survey in China to examine the public's preference for non-invasive facial rejuvenation methods, specifically dermal fillers with HA and neurotoxins. The reported results showed that more than half of the respondents had chosen some non-invasive facial rejuvenation, with dermal fillers being the most popular technique. These findings suggest a growing demand for non-surgical approaches like HA-based treatments as alternatives to invasive methods. It was also found that the primary motivation for individuals seeking these treatments was to enhance their appearance, highlighting the importance of facial aesthetics in decision-making. Safety played a crucial role in treatment selection, with patients favoring non-invasive options that provide effective results with minimal risk. However, the authors reported a relatively low awareness and knowledge among the public regarding non-invasive facial rejuvenation procedures that dental practitioners can perform. Most people relied on advertising to learn about these techniques, indicating the need for better education and professional outreach to raise awareness about available options. Other authors such as [PERSON] et al. [35], [PERSON] et al. [34], [PERSON] [33], and [PERSON] [31] also corroborate the findings reported by [PERSON] et al. [30], reinforcing the growing popularity of HA and other non-surgical modalities requested of dentists by patients, which is directly related to the search for satisfactory aesthetic results, low rates of complication and significant adverse effects, and shorter recovery time, thus avoiding invasive surgical procedures.  
In sum, these studies show that HA is becoming more popular in dental medicine as a non-surgical treatment option. It offers aesthetic benefits, anti-inflammatory and antibacterial properties, and tissue-regeneration capabilities. Additionally, the public prefers non-invasive treatments. Therefore, dental professionals should consider integrating HA into their practices to meet patient needs and achieve better results.