I siste del av «History of the Dominican Liturgy», som omhandler årene 1946-1969, skriver Fr. Augustine Thompson, O.P. først om hva som skjedde rett etter konsilet med tidebønnene – i 1965:
Another petition to the Congregation asked that individual houses be given the right to adopt the Roman Office in the vernacular, should they wish to do so. Finally, the Liturgical Commission, now under the presidency of Fr. Vincent de Couesnongle, was to draw up plans to reform liturgy so that it «match the actual experience of worship and spirituality.» …
During the next two years, the Order and the provinces struggled to enact reforms in discipline, life, and worship. The traditional lay brothers’ habit was abolished so that all friars, priest or lay, would dress the same.[93] New prefaces were provided for the Mass following Roman models. A supplement to the Breviary was published, including rubrical changes and new saints. But perhaps the most revolutionary changes in this period involved the general introduction of the vernacular and the Romanization of the Dominican chant. In the wake of the council, the Congregation of Rites was barraged with questions and petitions from religious orders with choral obligation asking if they could institute a wholly vernacular Office and drop the use of Gregorian chant. Citing the conciliar decree preserving the use of Latin and chant in just such cases, the Congregation generally said no, but hedged this prohibition with so many exceptions that it ceased to apply in most cases. ….
Litt senere – i 1969 – kom den endelige avskjeden med den dominikanske ritusen:
Acting on the recommendation of the Liturgical Commission of the Order under the presidency of Fr. Alfonso d’Amato of the Lombard Province, the chapter commissioned the Master General, Fr. Aniceto Fernandez, to request permission from what was now called the «Sacred Congregation for Divine Worship» to allow the Order to adopt the Roman Rite. He was also asked to create a new commission to examine the old liturgical and musical books of the Order to see what elements might be suitable for use with the new liturgy. Fr. Fernandez convened an extraordinary session of his Council on 3 April 1969. At it, Fr. Ansgar Dirks, as representative of the Liturgical Commission, gave a report explaining what changes the adoption of the new Roman Rite then in preparation would entail, and the council voted to accept the commission’s recommendation to adopt that Rite as that of the Order.
The Master forwarded a petition to that effect to the Congregation. On 2 June 1969, permission was formally granted, to come into effect on 18 November 1969. Fr. Fernandez communicated this news by letter to the provincials of the Order. For the Roman Masses celebrated in Gregorian chant, the chants of the old Dominican Gradual might still be used, «until some other accommodation can be found.» The new Roman Missal then in preparation might replace the old one when it came into effect on 30 November 1969, and its celebration in vernacular might begin as soon as bishops’ conferences approved vernacular translations. Until those developments the older Roman Mass, as currently reformed, was to be celebrated, whether in Latin or the vernacular. Fr. Fernandez did especially emphasize that, according to the terms of the rescript, permission to use the old Dominican liturgy might be given by provincials to priests of their provinces and by the Master to priests of the whole Order. But, for the Order as a whole, the Liturgy of Humbert was now a thing of the past.
Mange artikler om historien til den dominikanske kiturgien kan leses her.