All-on-4 Dental Implants for a gummy smile: can I straighten my teeth on to my own gum? Would shaving my gum help? (Photo)

By what it appears on the slight hazy photograph that you have shared. It appears that you still have your natural teeth intact in the front teeth. 
1. Answering your question you can do a procedure known as Gum Contouring and Smile Design performed on your natural teeth , to make the gummy smile go away.
2. Sinus lift in the back region for implant placement and prosthesis afterwards along with natural teeth correction can be done as one option to correct the smile completely. 
3. Your query about all-on-four, I would like to make you aware that this technique actually means placing 12-14 teeth in each jaw on just 4 jaws, by placing 02 straight and 02 angulated implants. Also , sole purpose of introduction of this technique was to avoid ANY SINUS LIFT in upper jaw or NERVE REPOSITIONING  in the upper jaw. 
So , you will not need a sinus lift in that case.  You will have to sacrifice your natural teeth and gummy smile can be corrected while planning for implant placement along with some osseoplasty - or bone contouring. 
So either of the options are good. But in my personal preference you should try to save your natural tooth if possible as no replacement comes close when it comes to comparison with your OWN Natural teeth. 
Good luck! 

Hi, All on 4 implants indicated when patients do not have any teeth, or need to remove all teeth clinically.
During the surgery we remove a few millimetre of the bone from surface to factor in bone loss after teeth removal. Please bear in mind if your teeth are not hopeless, there are minor surgeries and procedures to help with a gummy smile such as shaving gum ( gingivectomy) , rather than removing your teeth.
If you do not have enough bone at the back teeth, sinus lift is required to place implants.
Dr Sara Amini, City of London

One option is bone reduction and All-on-4. If your bone anatomy is available for an All-on-4,the finishing margins of prosthesis should be hidden under your lips. So, in this circumstance, bone reduction is a necessity.
Other option is conventional implant treatment which consists of sinus lifting, placement of 6 or 8 implants per jaw but this will not eliminate your gummy smile appearance. 3-D CT measurement gives us the chance to evaluate which method is better and minimal invasive for you

If you are willing to consult with multiple specialists and work on your teeth over a timeline, you might not need All-on-4 implants. Your concerns about the gummy smile, straightening of the teeth etc can all be addressed without implants in many cases. The first thing I would do is to go in for a consultation to determine what your issues are from not only your perspective but also from a clinical aspect and radiographic (X-ray) evaluation.

For the All-on-4 procedure, we grind away a few millimeters of bone which allows for correction or improvement of a gummy Smile. Just make sure you mention this specifically at your consult, since they need to check the amount of bone. Shaving your gums alone for cosmetic reasons, would make your teeth look too long in my opinion.

Let start with the basics.  What’s a dental implant in the first place? It is a small titanium screw, secured into the jawbone to provide a long-term support for crowns and dentures. The implant fuses to the bone, and it replaces the function of the root of a tooth. 

 

What does All-on 4 even mean? What All-on-4 means is that a whole arch of teeth is being supported on 4 strategically-placed dental implants, instead of replacing each tooth separately. 

 

Let’s begin by stating who is eligible or better said, who would benefit the most from All-on-4 implants:

It is usually best for people who have lost all of their teeth or must have the rest of their teeth pulled due to decay or any other reason, like an accident per say.  
People who already wear dentures, and no longer want to deal with the hassle and discomfort that they cause. 
People who do not have the bone density to support a full set of individual implants, or the financial means to get them. The procedure to get All-on-4s is faster and more affordable. 

 

Benefits

 

Their care is exactly the same as your natural teeth: brush, floss, mouthwash and periodic visits to the dentist should do. 
They are fitted and stable, allowing you to comfortably eat what you wish, and preventing embarrassing moments due to ill-fitting dentures. 
You can forget your nightly ritual of taking out your denture to soak and rinse over night!
Esthetically speaking, they look exactly like your natural teeth, and no one will be able to tell they are implants. 
They will prevent further bone deterioration. Your jawbone will become active again and will regain some of the bone mass it had lost. This will result in a strong and healthy jawbone.
They have an amazing 98% success rate. 
They may last a life time (with proper care, of course).

Your quality of life will improve dramatically, in a short period of time. Besides the new comfort your news set of teeth will provide for eating and talking, you will also regain any lost confidence, your self-esteem will rise and socializing will become easier.  

Star Dental Implant Center

When enhancing a smile using All on Four when teeth need to be extracted, then it is important to make sure the transition line (seam between the implant bridge and gum) is hidden above the esthetic zone or view when smiling. This is achieved with leveling immediately after the extractions before the dental implants are placed. By doing this, the gummy smile can be easily corrected.

A common step with All on Four is to reduce bone levels to hide what is called a "transition line". If this step is skipped, then when smiling, others can see where the restoration ends and the gum tissues begin. While this may seem extreme, this creates a situation that is more hygienic and easier to maintain and in most cases is more esthetic.

Based on what you say here,it seems that you are a candidate,a clinical and x ray diagnose needs  to be done,and its important for you to choose the right ALLON4 Specialist.