This review found that the application of AI tools in behaviour management, diagnosis, risk prediction, surveillance of oral health, clinical examination was effective with good acceptance of its use among both patients and dentists. Although few studies were available that studied the direct application of AI, the studies assessed various special groups. Majority of the applications of AI in special care groups were in the fields of screening, diagnosis and behaviour management.
AI for diagnosis of dental diseases
Individuals requiring special care often present with overtly sensitive responses, fearfulness, anxiety and limited cooperation to dental procedures including examination, that hinder the diagnostic accuracy of dentists(15). These factors along with the clinicians training in handling these circumstances make the early detection of dental caries and other dental diseases challenging. Use of imaging, radiographic analysis and clinical examination for diagnosis being time and cost intensive can further be an impediment in case of this population for accurate diagnosis. AI tools with their promising prospects have shown high accuracy and user acceptance in diagnosis of dental diseases.(12)
AI tools have shown capabilities to detect incipient dental caries, DentalMonitoring, overjet and Diagnocat are some AI tools that have shown accurate diagnosis at par with clinicians’ diagnosis.(12)Convolutional Neural Networks (CNN) exhibited greater speed of dental caries diagnosis, and higher sensitivity and specificity in diagnosing other dental diseases such as oral precancerous lesions, tooth fracture, periodontal diseases as compared to dentists.(16) Other tools such as GumAI, have shown high sensitivity in diagnosis of gingivitis among elderly population. With 100% user acceptance of the tool, its ease of use has been well established among elderly to improve their gingival health. (13) The large and diverse training datasets used for AI aid in better accuracy of the diagnosis, it also provide objective analysis without any bias as opposed to a clinician.(3) These factors provide a unique edge to AI tools in case of special needs groups for accurate and quick diagnosis of dental diseases. However, considering these positive outcomes future studies on large populations of different special needs groups and validation of these tools are essential to improve their reliability for real world usage.
AI for behaviour management
Studies have found that special care groups, especially persons with intellectual disabilities often exhibit anxious and uncooperative behaviour during dental procedures.(17) Although sedation and general anesthesia have been the main stay of management in these cases, AI offers a formidable alternative that needs further analysis. AI combined with virtual reality (VR) provide virtual simulations that can serve as distraction or means to reduce anxiety of special care groups prior to and during dental treatments. Integrating AI with VR, enabling it to change the virtual simulation based on emotional changes in the patient was found to induce greater cooperation by persons with mental disorders during dental procedure. Reduction in anxiety scores from 2.93 to 0.17 was noted with the Venham anxiety and behaviour scale while Frankl behaviour rating scale showed improved in behaviour of these individuals with the use of AI and VR.(11) Studies have found that the use of VR in pain and anxiety management corresponds with the theory of gate- control,(18) when coupled with AI it can modulate the virtual settings in accordance of the patient’s emotional state permitting stable behaviour control during dental procedures.
AI for communication assistance
Speech and language impairments in those with intellectual disabilities, autistic individuals, elderly populations are a major constraint in not only accessing but also in effectively communicating during dental visits. Various conversational agents powered with AI have shown to enable persons with cognitive difficulties in effective communication, health management and carrying out daily activities.(19) Through AI enabled personalized delivery of health educational content, elaborate oral hygiene information can be transformed by natural language processing (NLP) into easy to understand instruction for better compliance.(20) Although studies have determined that AI- based chatbots showed promising results in promoting good health practices among general population,(21) their adaptation for individuals with special needs require various considerations. The direct application of AI in addressing communication constraints for simplifying dental treatment procedures among special needs groups needs furthers research.
AI for treatment planning
In case of individuals with special care needs, their medical history, response to dental treatment, level of understanding, oral hygiene practices and clinical conditions need to be taken into consideration to devise a tailored dental treatment plan.(22) The process being resource and time consuming, dentist’s experience and clinical acumen are critical to making the decision. Including AI tools for dental treatment planning facilitate objective and personalized decisions based on the patient’s requirements. With the aid of AI algorithms rapid planning can be undertaken along with features such as predictive analytics that help prioritize specific treatments based on risk of developing dental diseases.(23) Studies have shown that AI applications such as Previsoft, Overjet allow for risk characterization of patients based on dental conditions aiding in treatment planning suitably.(12) The scope of incorporating AI tools such as these to deliver personalized, swift and simplified dental treatment plan confirming to the special needs of these groups should be explored.
AI for remote consultation
The availability of dental specialists providing dental care to special care group of patients is scarce and hence access to dental care may be limited. Additionally, financial constraints, logistic barriers and caregiver’s limitations can hinder access to dental care.(24) Tele dentistry and remote dental consultation powered with AI can overcome these barriers in diagnosis and treatment planning of dental diseases. Tools such as Apple Tree Dental that provides mobile supported tele dentistry have simplified timely dental care for persons with disabilities limited by accessibility concerns.(12) Including AI with such tools should be studied further to enhance diagnosis and treatment planning with image analysis and risk prediction of users.
Dentist’s perception of adopting AI in special care dentistry
The perception, attitude and awareness of dentists regarding AI in providing dental care to the special needs groups is critical to understand the shortcomings and potential that need to be harnessed further. Hence this review also included a study conducted to assess the perception of dentists. Barnawi et al., in their study conducted among dentists of Saudi Arabia found that 59.2% of the dentists incorporated AI in clinical dental practice.(14) The study further found that majority application of AI was in treatment planning (43.7%). More than half the study participants had positive perception of AI in special care dentistry. Previous training in AI was one the strongest predictor of its use. The study implied that developing standard AI framework and training dental practitioners in its use could help improvise its adoption in special care dentistry.
AI in assistive technologies with potential for application in special care dentistry
The scope of AI in assistive healthcare technology has been studied and it has shown various applications. Their use has been majorly included in assistive functions such as aids for navigating, language assistance, cognitive support.(25) Integrating AI Internet of Things can further enhance their usability in persons needing special care. Wearable smart devices that monitor health parameters can aid in medical and behavioural management during dental visits. Another assistive technology Environmental Control System (ECS) facilitate physically or intellectually disabled persons to manage and interact with their environment. Integrating AI and ECS to examine behavioural and emotional changes that enable altering the dental clinic 6environment accordingly could ease anxiety of such patients during dental visits.(26)
Challenges and ethical considerations
Considering application of most AI tools involve input of private data and data on personal health, ethical and safety concerns are certain. Integration of AI necessitates procedures such as data anonymization of personal data of users and algorithmic transparency to ascertain the functioning of AI systems are ethical and safe. Compliance of such systems with regional and international regulations such as Digital Personal Data Protection Act, General Data Protection Regulation (GDPR) are essential for ethical and safe performance of AI tools
Limitations and recommendations
The findings of this review highlight the varied potential of AI in transforming oral care delivery for those with special needs. However, the limitations of this review need careful acknowledgement in analysing these results. The dearth of scientifically robust studies in this context not only raises the need for more studies in this area but also studies with larger populations, varied special needs groups and rigorous study design, examining long- term outcomes. AI tools evaluated in the included studies were diverse hampering comparison and lacked external validation among larger special needs groups. The real-world application of these tools and applications have been scarcely studied, raising concerns on their clinical and practical utility. Studies also need to explore the impact of AI tools in special care dentistry on the oral health related quality of life of these individuals. With evidence on AI in dentistry evolving there is a need to broaden the scope of research to application of AI in special care dentistry.