## 3 Results  
### Google Trends Relative Search Volumes for \"Elderly\" and \"Teledentistry\"  
The most relevant search term for the geriatric population was \"Elderly\", as per Google Trends. Worldwide relative search volumes for \"Elderly\" from January 2004 to December 2022 showed diffusely medium-high normalized values, with a peak between January and September 2020, and a wide geographical distribution, mainly involving Singapore with the maximum interest (100 RSV), followed by Ireland (RSV = 62), Jamaica (RSV = 61), United Kingdom (RSV = 53), Australia (RSV = 46), and others. The regions with the lowest interest for the \"Elderly\" search term (RSV = 1) were Mexico, Brazil, Germany, France, Japan, Turkey, Russia, Poland, New Zealand, the United States, and Hong Kong. Worldwide relative search volumes for \"Elderly\" until 31 December 2022 and the related geographic distribution are illustrated in Figures 1 and 2. The most relevant search term for remote dental care provision was \"Teledentistry\", as per Google Trends. Worldwide relative search volumes for \"Teledentistry\" from January 2004 to December 2022 (Figure 3) showed a higher peak in September 2004 and lower ones in 2005, 2006, and between January and September 2020. They also showed limited geographical distribution, involving the United States with the maximum interest (100 RSV), followed by Egypt (RSV = 76); Indonesia (RSV = 75); Philippines (RSV = 67); India (RSV = 44); Australia (RSV = 39); Canada (RSV = 33); Saudi Arabia (RSV = 32); and the United Kingdom (RSV = 19). No Google search data from other countries were recorded (Figure 4). Figure 3: Worldwide relative search volumes for “Teledentistry” from January 2004 to December 2022. Figure 2: Worldwide interest by region for “Elderly” search term on Google search engine. Google Trends Relative Search Volumes for \"Elderly\" and \"Teledentistry\" Combined with Oral and Dental Needs, or Teledentistry Applications  
The keywords \"Tooth loss\", \"Periodontitis\", \"Tooth extraction\", \"Dentures\", \"Caries\", and \"Stomatitis\" for oral and dental needs were all relevant search terms concerning oral and dental needs, as per Google Trends. A poor match was found instead for the keywords \"teleconsult\", \"telediagnosis\", \"teleassistance\", \"telescreening\", and \"telemonitoring\" for remote oral and dental care, thus replaced by \"Consult\", \"Diagnosis\", \"Monitoring\", \"Screening\", \"Assistance\", and \"Education\". \"Elderly\" RSV mean and median RSV values were 45.579 and 44.000, respectively, while those related to \"Teledentistry\" were 0.303 and 0.5, overall indicating a very limited interest in the last. Higher RSV was recorded in potential teledentistry applications in the elderly rather than the oral and dental needs of the geriatric population. In detail, the strongest interest of Internet users was focused on \"Assistance\" (mean RSV = 70.751; median RSV = 70); \"Education\" (mean RSV = 45.218; median RSV = 39); and \"Diagnosis\" (mean RSV = 41.013; median RSV = 39). Among the oral and dental needs diffused among the geriatric patients and presently investigated, \"Dentures\" (mean RSV = 10.105; median RSV = 9) and \"Tooth extractions\" (mean RSV = 8.461; median RSV = 7.000) were the most frequently inquired, opposite to \"Stomatitis\" (mean RSV = 2.250; median RSV = 2) and \"Periodontitis\" (mean RSV = 2.566; median RSV = 2), revealing the lowest public interest. The descriptive statistics of normalized RSV values between January 2004 and December 2022 for \"Elderly\", \"Teledentistry\", oral and dental needs, and potential teledentistry applications are illustrated in Table 1.  
Correlation between Worldwide Google Trends Relative Search Volumes (RSV) for \"Elderly\" and \"Teledentistry\" Combined with Oral and Dental Needs, or Teledentistry Applications  
Teledentistry (r = 0.214; \(p\) value = 0.001), Tooth extraction (r = 0.207; \(p\) value = 0.002); and Consult (r = 0.214; \(p\) value = 0.001) RSVs were positively correlated.