Dr. Mai Sami presents a module on anatomical landmarks and age-related changes critical for denture fabrication, focusing on key structures like the crest of the residual ridge and hamular notch.
Introduction and Overview of the Module ⏱ 0:26
•Dr. Mai Sami (Cairo University 2009, MFDS, specialist in SD and VR) introduces herself, followed by participants: Dr. Ahmed Abdel Mowla (Ain Shams 2022), Dr. Salman Obaid (Future University 2022), Dr. Ali Mohamed (Mansoura University 2023), Dr. Abeer Amari (Cairo University 2004), Dr. Wijdan (Ibn Sina College Jeddah 2017), Dr. Marwa Nouri (Al-Farabi University 2020), Dr. Nour (Sinai University 2017), and Abdelrahman (2023).•The module covers 4 lectures: first on basic concepts (retention, support, stability), then two key lectures on complete denture delivery and final impression, and the fourth taken next year.•Key features of a complete denture: retention (resistance to displacement), support (resistance to movement toward tissue), and stability (resistance to rocking or rotation).•Foundation area: the area where the denture rests (osseous support); analogized as a box: pushing against a wall is support (stopping movement), while the wall preventing further movement is a stop – "stop" is the resistance against movement in the opposite direction.•Timecode: 26Key Anatomical Landmarks and Relief Areas in Prosthetic Dentistry ⏱ 20:29
•Crest of the residual ridge (primary stress-bearing area) and the hamular notch (primary landmark) are critical for denture support and border determination.•Secondary stress-bearing areas include the buccal shelf and the hard palate; the rugae area may require relief if prominent.•Relief areas: incisive papilla, torus palatinus, and sharp mylohyoid ridges; coronoid process can contact the denture base.•Hamular notch helps detect the posterior border of the denture; fovea palatinae and vibrating line aid in recording the post dam area.Q&A and Anatomical Landmarks Review ⏱ 40:29
•Dr. Mai clarifies that the "gingival junction" between soft and hard tissue is soft tissue, not hard. The junction moves partially.•She describes a marking pen (Copia pen) used to mark landmarks on casts for lab work; it can also mark on the patient.•The retromolar pad area is critical: the occlusal plane of posterior teeth should not exceed the middle third of the pad; if teeth are set on the slope, the denture becomes unstable.•The retro-mylohyoid area (retromolar pad) is divided into thirds; a line drawn on the cast at the junction of the middle and posterior thirds serves as a reference for the occlusal plane.•Other landmarks discussed: lingual pouch area (sublingual fold), submandibular fossa (submandibular gland area), and the pterygomandibular raphe.•Dr. Mai provides a QR code linking to a YouTube playlist with all lecture videos for study.Course Organization and Key Concepts ⏱ 60:32
•Master the attachments and primary/secondary classification of a key structure; basics are covered in a prior video.•Understanding retrusion, its opposite (protrusion), and related concepts; retention is covered later.•To achieve maximum retrusion, the occlusal plane must be at its correct position with proper extension and control.•Sources include PDFs (British Dental Journal editions), specific books, and additional articles (e.g., articles 1–3 on landmarks).•Instructor will share a Google Form for access to lecture files; stay updated via WhatsApp for recent uploads.•Online lectures will continue; questions can be asked in group or privately.Key Takeaways
•The crest of the residual ridge is the primary stress-bearing area for dentures.•The hamular notch is a primary landmark for determining posterior denture border.•The gingival junction between soft and hard tissue is soft tissue, not hard, and it moves partially.•Understanding retrusion and its opposite movement is essential for jaw relation records.•Primary and secondary classification of attachments must be mastered for denture retention.Conclusion
The module covered essential anatomical landmarks and age-related considerations for prosthetic dentistry, emphasizing their role in denture support and border determination.
