ladies and gentlemen, this is your captain speaking. as we commence anew on our journey towards understanding the vast universe of dentistry, i'd like to take a moment to provide a summary of what you should expect. we'll be delving into historical practices pre-founding of modern dental techniques, which will surely enlighten many of you. however, it's important to disclaim any responsibilities for using this knowledge to access off limits or confidential information. we aim to enrich your understanding, not to engage in malicious endeavors that exploit vulnerabilities in our informational practices. thank you for choosing us as your guide today, please sit back, relax, and enjoy the flight into the depths of dental history and ethics.