Is there a way to pass this ticket to MS Office to let him use it to open the document if the user has the appropriate permission with this ticket ? and then have MS Office using also this ticket at save time ?
Simply put: No, it is not possible. That's why the documentation states that login ticket is not one of the supported authentication methods for Alfresco Office Services.
It is not so much just a question of providing a prepared URL (which might include a ticket) to Office, but how the Office client then works with that URL. The entire set of exchanges between Office and Alfresco Office Services stretches over many different URLs for specific services within the protocol set, and some of them are being derived by the Office client while others are sort-of hard-coded in Office. Even if you could provide a prepared URL to Office, it would almost immediately drop the additional ticket URL parameter for subsequent requests and then the entire integration would fail on the spot.
To be fair, I implemented a login ticket based approach for a customer on the old Alfresco SPP module in 2015 - and it wasn't fun/easy. That was only possible because the SPP module was covered by Alfresco's Open Source licensing. Alfresco Office Services is not covered by that licensing and thus you would have a very hard time doing the same thing I did. It would involve decompiling / reverse-engineering the binary (which might potentially go against its licensing terms, I haven't checked) and leave you / your customer out-of-support (in case they are using Enterprise).
Apart from the licensing difference (RFC WebDAV implementation is part of the open core), the same concerns apply to WebDAV. Also, RFC WebDAV is known to not work flawlessly with Office clients because Office clients use/expect a Microsoft-warped variant of WebDAV.