Restoration of the Sistine Chapel frescoes of the work. Based on this decision, according to Arguimbau's critical reading of the restoration data that has been provided, the chemists of the restoration team decided upon a solvent that would effectively strip the ceiling down to its paint-impregnated plaster. After treatment, only that which was painted "buon fresco" would remain. According to critics, the inherent problem with this approach is that it relied heavily upon an assumption that Michelangelo only painted "buon fresco", that he was always satisfied with the result at the end of the day, and that in four and a half years spent on the
Sistine Chapel ceiling completed by four large corner "pendentives", each illustrating a dramatic Biblical story. The narrative elements of the ceiling illustrate that God made the World as a perfect creation and put humanity into it, that humanity fell into disgrace and was punished by death and by separation from God. Humanity then sank further into sin and disgrace, and was punished by the Great Flood. Through a lineage of Ancestors – from Abraham to Joseph – God sent the saviour of humanity, Christ Jesus. The coming of the Saviour was prophesied by Prophets of Israel and Sibyls of the Classical world. The