Publications by authors named "M A Razek"
The preoperative fabrication of well-contoured, computer-aided design and computer-aided manufacturing (CAD-CAM), custom healing abutments is essential for guiding soft tissue healing and saving chairside time. This dental technique involves a fully digital workflow to fabricate a CAD-CAM custom healing abutment that relies on preoperative digital implant planning. The healing abutment is designed with an optimal emergence profile that can predictably direct the anatomy of the peri-implant mucosa.
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- * The results indicated higher concentrations of heavy metals (like Fe, Cu, Zn, Mn, and Ni) in fish compared to water, particularly in Lake Brullus, which was identified as the most polluted site, while Lake Nasser showed the least contamination.
- * Gender-specific responses to heavy metal exposure were observed, with males showing increased expression of antioxidant and inflammatory-related genes, while females had elevated immune-related gene expression; growth-related genes were generally downregulated in more polluted sites, contrasting with normal patterns in Lake Nasser.
Purpose: To evaluate how prosthetic management affects the otological and audiological state of infants with cleft lip and palate by preventing or treating otitis media (OM).
Materials And Methods: Thirty infants with cleft lip and palate (L/P) were assigned to three equal groups according to the age of prosthetic intervention; Group I: immediately after birth, Group II: 2 months old, Group III: 5 months old. Assessment of middle ear function by tympanometry and hearing quality by auditory brainstem response (ABR) under natural sleep was conducted before and after prosthetic treatment every month till 10 months of age.
Statement Of Problem: Infants with a cleft palate often experience middle ear disease, a condition of great significance, and early prosthetic management of these infants is essential. However, any correlation between prosthetic palatal obturation and middle ear function is unclear.
Purpose: The purpose of this clinical trial was to assess whether prosthetic palatal obturation with a feeding appliance prevented or improved middle ear problems in infants with a cleft lip and palate.
Statement Of Problem: The use of a scannable healing abutment is a convenient option for fabricating implant-supported restorations (ISRs) with a digital workflow; however, clinical studies evaluating prosthetic efficacy are lacking.
Purpose: The purpose of this randomized controlled trial was to investigate the prosthetic efficacy of definitive posterior single ISRs fabricated after scanning using a scannable healing abutment-scan peg (SHA-SP) in comparison with a conventional scan body (CSB). The time for data acquisition, quality of proximal and occlusal contacts, and relative occlusal force of ISRs were measured.